<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f055a-0c4b-7384-8c8d-f336523f352c,g:81c8c1fd-08d0-4217-b514-5eddee313e65-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:panw="http://www.paloaltonetworks.com/20260731" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.paloaltonetworks.com/20260731">
  <xs:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2026" schemaLocation="https://xbrl.sec.gov/country/2026/country-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cyd-af-sub/2026" schemaLocation="https://xbrl.sec.gov/cyd/2026/cyd-af-sub-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/stpr/2026" schemaLocation="https://xbrl.sec.gov/stpr/2026/stpr-2026.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="panw-20260731_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="panw-20260731_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="panw-20260731_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="panw-20260731_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="COVER" roleURI="http://www.paloaltonetworks.com/role/COVER">
        <link:definition>0000001 - Document - COVER</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AUDITINFORMATION" roleURI="http://www.paloaltonetworks.com/role/AUDITINFORMATION">
        <link:definition>0000002 - Document - AUDIT INFORMATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETS" roleURI="http://www.paloaltonetworks.com/role/CONSOLIDATEDBALANCESHEETS">
        <link:definition>9952151 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://www.paloaltonetworks.com/role/CONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFOPERATIONS" roleURI="http://www.paloaltonetworks.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS">
        <link:definition>9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME" roleURI="http://www.paloaltonetworks.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME">
        <link:definition>9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" roleURI="http://www.paloaltonetworks.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
        <link:definition>9952155 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://www.paloaltonetworks.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPolicies" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPolicies">
        <link:definition>9952157 - Disclosure - Description of Business and Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://www.paloaltonetworks.com/role/Revenue">
        <link:definition>9952158 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.paloaltonetworks.com/role/FairValueMeasurements">
        <link:definition>9952159 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashEquivalentsandInvestments" roleURI="http://www.paloaltonetworks.com/role/CashEquivalentsandInvestments">
        <link:definition>9952160 - Disclosure - Cash Equivalents and Investments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingReceivables" roleURI="http://www.paloaltonetworks.com/role/FinancingReceivables">
        <link:definition>9952161 - Disclosure - Financing Receivables</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstruments" roleURI="http://www.paloaltonetworks.com/role/DerivativeInstruments">
        <link:definition>9952162 - Disclosure - Derivative Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Inventory" roleURI="http://www.paloaltonetworks.com/role/Inventory">
        <link:definition>9952163 - Disclosure - Inventory</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Acquisitions" roleURI="http://www.paloaltonetworks.com/role/Acquisitions">
        <link:definition>9952164 - Disclosure - Acquisitions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssets" roleURI="http://www.paloaltonetworks.com/role/GoodwillandIntangibleAssets">
        <link:definition>9952165 - Disclosure - Goodwill and Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipment" roleURI="http://www.paloaltonetworks.com/role/PropertyandEquipment">
        <link:definition>9952166 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.paloaltonetworks.com/role/Debt">
        <link:definition>9952167 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://www.paloaltonetworks.com/role/Leases">
        <link:definition>9952168 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://www.paloaltonetworks.com/role/CommitmentsandContingencies">
        <link:definition>9952169 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquity" roleURI="http://www.paloaltonetworks.com/role/StockholdersEquity">
        <link:definition>9952170 - Disclosure - Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlans" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlans">
        <link:definition>9952171 - Disclosure - Equity Award Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxes">
        <link:definition>9952172 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomePerShare" roleURI="http://www.paloaltonetworks.com/role/NetIncomePerShare">
        <link:definition>9952173 - Disclosure - Net Income Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIncomeExpenseNet" roleURI="http://www.paloaltonetworks.com/role/OtherIncomeExpenseNet">
        <link:definition>9952174 - Disclosure - Other Income (Expense), Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://www.paloaltonetworks.com/role/SegmentInformation">
        <link:definition>9952175 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsNotes" roleURI="http://www.paloaltonetworks.com/role/SubsequentEventsNotes">
        <link:definition>9952176 - Disclosure - Subsequent Events (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>9955511 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesTables" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesTables">
        <link:definition>9955512 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://www.paloaltonetworks.com/role/RevenueTables">
        <link:definition>9955513 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.paloaltonetworks.com/role/FairValueMeasurementsTables">
        <link:definition>9955514 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashEquivalentsandInvestmentsTables" roleURI="http://www.paloaltonetworks.com/role/CashEquivalentsandInvestmentsTables">
        <link:definition>9955515 - Disclosure - Cash Equivalents and Investments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingReceivablesTables" roleURI="http://www.paloaltonetworks.com/role/FinancingReceivablesTables">
        <link:definition>9955516 - Disclosure - Financing Receivables (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsTables" roleURI="http://www.paloaltonetworks.com/role/AcquisitionsTables">
        <link:definition>9955517 - Disclosure - Acquisitions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsTables" roleURI="http://www.paloaltonetworks.com/role/GoodwillandIntangibleAssetsTables">
        <link:definition>9955518 - Disclosure - Goodwill and Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentTables" roleURI="http://www.paloaltonetworks.com/role/PropertyandEquipmentTables">
        <link:definition>9955519 - Disclosure - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.paloaltonetworks.com/role/DebtTables">
        <link:definition>9955520 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.paloaltonetworks.com/role/LeasesTables">
        <link:definition>9955521 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesTables" roleURI="http://www.paloaltonetworks.com/role/CommitmentsandContingenciesTables">
        <link:definition>9955522 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityTables" roleURI="http://www.paloaltonetworks.com/role/StockholdersEquityTables">
        <link:definition>9955523 - Disclosure - Stockholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansTables" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansTables">
        <link:definition>9955524 - Disclosure - Equity Award Plans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxesTables">
        <link:definition>9955525 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomePerShareTables" roleURI="http://www.paloaltonetworks.com/role/NetIncomePerShareTables">
        <link:definition>9955526 - Disclosure - Net Income Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIncomeExpenseNetTables" roleURI="http://www.paloaltonetworks.com/role/OtherIncomeExpenseNetTables">
        <link:definition>9955527 - Disclosure - Other Income (Expense), Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationTables" roleURI="http://www.paloaltonetworks.com/role/SegmentInformationTables">
        <link:definition>9955528 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesStockSplitDetails" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesStockSplitDetails">
        <link:definition>9955529 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Stock Split) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesConcentrationsDetails" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesConcentrationsDetails">
        <link:definition>9955530 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Concentrations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesFinancingReceivablesDetails" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesFinancingReceivablesDetails">
        <link:definition>9955531 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Financing Receivables) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesDerivativesDetails" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesDerivativesDetails">
        <link:definition>9955532 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Derivatives) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesPropertyandEquipmentDetails" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesPropertyandEquipmentDetails">
        <link:definition>9955533 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Property and Equipment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesImpairmentofGoodwillIntangibleAssetsandOtherLongLivedAssetsDetails" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesImpairmentofGoodwillIntangibleAssetsandOtherLongLivedAssetsDetails">
        <link:definition>9955534 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Impairment of Goodwill, Intangible Assets, and Other Long-Lived Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesSubscriptionandSupportRevenueDeferredRevenueandDeferredContractCostsDetails" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesSubscriptionandSupportRevenueDeferredRevenueandDeferredContractCostsDetails">
        <link:definition>9955535 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Subscription and Support Revenue, Deferred Revenue, and Deferred Contract Costs) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofBusinessandSummaryofSignificantAccountingPoliciesSoftwareDevelopmentCostsDetails" roleURI="http://www.paloaltonetworks.com/role/DescriptionofBusinessandSummaryofSignificantAccountingPoliciesSoftwareDevelopmentCostsDetails">
        <link:definition>9955536 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Software Development Costs) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDisaggregationofRevenueGeographicTheaterDetails" roleURI="http://www.paloaltonetworks.com/role/RevenueDisaggregationofRevenueGeographicTheaterDetails">
        <link:definition>9955537 - Disclosure - Revenue (Disaggregation of Revenue - Geographic Theater) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDisaggregationofRevenueTypeofRevenueDetails" roleURI="http://www.paloaltonetworks.com/role/RevenueDisaggregationofRevenueTypeofRevenueDetails">
        <link:definition>9955538 - Disclosure - Revenue (Disaggregation of Revenue - Type of Revenue) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDeferredRevenueDetails" roleURI="http://www.paloaltonetworks.com/role/RevenueDeferredRevenueDetails">
        <link:definition>9955539 - Disclosure - Revenue (Deferred Revenue) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRemainingPerformanceObligationsDetails" roleURI="http://www.paloaltonetworks.com/role/RevenueRemainingPerformanceObligationsDetails">
        <link:definition>9955540 - Disclosure - Revenue (Remaining Performance Obligations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRemainingPerformanceObligationsDetails_1" roleURI="http://www.paloaltonetworks.com/role/RevenueRemainingPerformanceObligationsDetails_1">
        <link:definition>9955540 - Disclosure - Revenue (Remaining Performance Obligations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsFairValueofFinancialAssetsandLiabilitiesDetails" roleURI="http://www.paloaltonetworks.com/role/FairValueMeasurementsFairValueofFinancialAssetsandLiabilitiesDetails">
        <link:definition>9955541 - Disclosure - Fair Value Measurements (Fair Value of Financial Assets and Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsReconciliationofOurContingentConsiderationLiabilityDetails" roleURI="http://www.paloaltonetworks.com/role/FairValueMeasurementsReconciliationofOurContingentConsiderationLiabilityDetails">
        <link:definition>9955542 - Disclosure - Fair Value Measurements (Reconciliation of Our Contingent Consideration Liability) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashEquivalentsandInvestmentsAvailableforSaleDebtSecuritiesDetails" roleURI="http://www.paloaltonetworks.com/role/CashEquivalentsandInvestmentsAvailableforSaleDebtSecuritiesDetails">
        <link:definition>9955543 - Disclosure - Cash Equivalents and Investments (Available-for-Sale Debt Securities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashEquivalentsandInvestmentsAvailableforSaleDebtSecuritiesContractualMaturitiesDetails" roleURI="http://www.paloaltonetworks.com/role/CashEquivalentsandInvestmentsAvailableforSaleDebtSecuritiesContractualMaturitiesDetails">
        <link:definition>9955544 - Disclosure - Cash Equivalents and Investments (Available-for-Sale Debt Securities, Contractual Maturities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashEquivalentsandInvestmentsMarketableEquitySecuritiesNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/CashEquivalentsandInvestmentsMarketableEquitySecuritiesNarrativeDetails">
        <link:definition>9955545 - Disclosure - Cash Equivalents and Investments (Marketable Equity Securities) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashEquivalentsandInvestmentsMarketableEquitySecuritiesNarrativeDetails_1" roleURI="http://www.paloaltonetworks.com/role/CashEquivalentsandInvestmentsMarketableEquitySecuritiesNarrativeDetails_1">
        <link:definition>9955545 - Disclosure - Cash Equivalents and Investments (Marketable Equity Securities) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingReceivablesShortandLongtermFinancingReceivablesDetails" roleURI="http://www.paloaltonetworks.com/role/FinancingReceivablesShortandLongtermFinancingReceivablesDetails">
        <link:definition>9955546 - Disclosure - Financing Receivables (Short and Long-term Financing Receivables) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingReceivablesInternalCreditRiskDetails" roleURI="http://www.paloaltonetworks.com/role/FinancingReceivablesInternalCreditRiskDetails">
        <link:definition>9955547 - Disclosure - Financing Receivables (Internal Credit Risk) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingReceivablesNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/FinancingReceivablesNarrativeDetails">
        <link:definition>9955548 - Disclosure - Financing Receivables (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeInstrumentsDetails" roleURI="http://www.paloaltonetworks.com/role/DerivativeInstrumentsDetails">
        <link:definition>9955549 - Disclosure - Derivative Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoryDetails" roleURI="http://www.paloaltonetworks.com/role/InventoryDetails">
        <link:definition>9955550 - Disclosure - Inventory (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/AcquisitionsNarrativeDetails">
        <link:definition>9955551 - Disclosure - Acquisitions (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsScheduleofPurchaseConsiderationDetails" roleURI="http://www.paloaltonetworks.com/role/AcquisitionsScheduleofPurchaseConsiderationDetails">
        <link:definition>9955552 - Disclosure - Acquisitions (Schedule of Purchase Consideration) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionPurchasePriceAllocationDetails" roleURI="http://www.paloaltonetworks.com/role/AcquisitionPurchasePriceAllocationDetails">
        <link:definition>9955553 - Disclosure - Acquisition (Purchase Price Allocation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsIntangibleAssetsAcquiredasPartofBusinessCombinationDetails" roleURI="http://www.paloaltonetworks.com/role/AcquisitionsIntangibleAssetsAcquiredasPartofBusinessCombinationDetails">
        <link:definition>9955554 - Disclosure - Acquisitions (Intangible Assets Acquired as Part of Business Combination) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionSummaryofEmployeeSeveranceChargesDetails" roleURI="http://www.paloaltonetworks.com/role/AcquisitionSummaryofEmployeeSeveranceChargesDetails">
        <link:definition>9955555 - Disclosure - Acquisition (Summary of Employee Severance Charges) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionSummaryofEmployeeSeveranceChargesDetails_1" roleURI="http://www.paloaltonetworks.com/role/AcquisitionSummaryofEmployeeSeveranceChargesDetails_1">
        <link:definition>9955555 - Disclosure - Acquisition (Summary of Employee Severance Charges) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionProFormaInformationDetails" roleURI="http://www.paloaltonetworks.com/role/AcquisitionProFormaInformationDetails">
        <link:definition>9955556 - Disclosure - Acquisition (Pro Forma Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsGoodwillDetails" roleURI="http://www.paloaltonetworks.com/role/GoodwillandIntangibleAssetsGoodwillDetails">
        <link:definition>9955557 - Disclosure - Goodwill and Intangible Assets (Goodwill) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsPurchasedIntangibleAssetsbyMajorClassDetails" roleURI="http://www.paloaltonetworks.com/role/GoodwillandIntangibleAssetsPurchasedIntangibleAssetsbyMajorClassDetails">
        <link:definition>9955558 - Disclosure - Goodwill and Intangible Assets (Purchased Intangible Assets by Major Class) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsPurchasedIntangibleAssetsbyMajorClassDetails_1" roleURI="http://www.paloaltonetworks.com/role/GoodwillandIntangibleAssetsPurchasedIntangibleAssetsbyMajorClassDetails_1">
        <link:definition>9955558 - Disclosure - Goodwill and Intangible Assets (Purchased Intangible Assets by Major Class) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsAmortizationofPurchasedIntangibleAssetsDetails" roleURI="http://www.paloaltonetworks.com/role/GoodwillandIntangibleAssetsAmortizationofPurchasedIntangibleAssetsDetails">
        <link:definition>9955559 - Disclosure - Goodwill and Intangible Assets (Amortization of Purchased Intangible Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsAmortizationofPurchasedIntangibleAssetsDetails_1" roleURI="http://www.paloaltonetworks.com/role/GoodwillandIntangibleAssetsAmortizationofPurchasedIntangibleAssetsDetails_1">
        <link:definition>9955559 - Disclosure - Goodwill and Intangible Assets (Amortization of Purchased Intangible Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandIntangibleAssetsFutureAmortizationExpenseofIntangibleAssetsDetails" roleURI="http://www.paloaltonetworks.com/role/GoodwillandIntangibleAssetsFutureAmortizationExpenseofIntangibleAssetsDetails">
        <link:definition>9955560 - Disclosure - Goodwill and Intangible Assets (Future Amortization Expense of Intangible Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentPropertyandEquipmentbyTypeDetails" roleURI="http://www.paloaltonetworks.com/role/PropertyandEquipmentPropertyandEquipmentbyTypeDetails">
        <link:definition>9955561 - Disclosure - Property and Equipment (Property and Equipment by Type) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/PropertyandEquipmentNarrativeDetails">
        <link:definition>9955562 - Disclosure - Property and Equipment (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtConvertibleSeniorNotesNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/DebtConvertibleSeniorNotesNarrativeDetails">
        <link:definition>9955563 - Disclosure - Debt (Convertible Senior Notes) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtDetailsofNotesDetails" roleURI="http://www.paloaltonetworks.com/role/DebtDetailsofNotesDetails">
        <link:definition>9955564 - Disclosure - Debt (Details of Notes) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleofInterestExpenseRecognizedDetails" roleURI="http://www.paloaltonetworks.com/role/DebtScheduleofInterestExpenseRecognizedDetails">
        <link:definition>9955565 - Disclosure - Debt (Schedule of Interest Expense Recognized) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtNoteHedgesDetails" roleURI="http://www.paloaltonetworks.com/role/DebtNoteHedgesDetails">
        <link:definition>9955566 - Disclosure - Debt (Note Hedges) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtNoteHedgesNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/DebtNoteHedgesNarrativeDetails">
        <link:definition>9955567 - Disclosure - Debt (Note Hedges) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtWarrantsNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/DebtWarrantsNarrativeDetails">
        <link:definition>9955568 - Disclosure - Debt (Warrants) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtWarrantsDetails" roleURI="http://www.paloaltonetworks.com/role/DebtWarrantsDetails">
        <link:definition>9955569 - Disclosure - Debt (Warrants) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt2030ConvertibleSeniorNotesandCappedCallsNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/Debt2030ConvertibleSeniorNotesandCappedCallsNarrativeDetails">
        <link:definition>9955570 - Disclosure - Debt (2030 Convertible Senior Notes and Capped Calls) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtRevolvingCreditFacilityDetails" roleURI="http://www.paloaltonetworks.com/role/DebtRevolvingCreditFacilityDetails">
        <link:definition>9955571 - Disclosure - Debt (Revolving Credit Facility) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/LeasesNarrativeDetails">
        <link:definition>9955572 - Disclosure - Leases (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofOperatingLeasesAdditionalInformationDetails" roleURI="http://www.paloaltonetworks.com/role/LeasesScheduleofOperatingLeasesAdditionalInformationDetails">
        <link:definition>9955573 - Disclosure - Leases (Schedule of Operating Leases, Additional Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails" roleURI="http://www.paloaltonetworks.com/role/LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails">
        <link:definition>9955574 - Disclosure - Leases (Schedule of Maturities of Operating Lease Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails_1" roleURI="http://www.paloaltonetworks.com/role/LeasesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails_1">
        <link:definition>9955574 - Disclosure - Leases (Schedule of Maturities of Operating Lease Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesPurchaseCommitmentsDetails" roleURI="http://www.paloaltonetworks.com/role/CommitmentsandContingenciesPurchaseCommitmentsDetails">
        <link:definition>9955575 - Disclosure - Commitments and Contingencies (Purchase Commitments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/CommitmentsandContingenciesNarrativeDetails">
        <link:definition>9955576 - Disclosure - Commitments and Contingencies (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/StockholdersEquityNarrativeDetails">
        <link:definition>9955577 - Disclosure - Stockholders' Equity (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityScheduleofShareRepurchasesDetails" roleURI="http://www.paloaltonetworks.com/role/StockholdersEquityScheduleofShareRepurchasesDetails">
        <link:definition>9955578 - Disclosure - Stockholders' Equity (Schedule of Share Repurchases) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansNarrativeDetails">
        <link:definition>9955579 - Disclosure - Equity Award Plans (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansNarrativeDetails_1" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansNarrativeDetails_1">
        <link:definition>9955579 - Disclosure - Equity Award Plans (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansScheduleofStockOptionActivitiesDetails" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansScheduleofStockOptionActivitiesDetails">
        <link:definition>9955580 - Disclosure - Equity Award Plans (Schedule of Stock Option Activities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansRSUandPSUActivitiesDetails" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansRSUandPSUActivitiesDetails">
        <link:definition>9955581 - Disclosure - Equity Award Plans (RSU and PSU Activities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansSharesAvailableforGrantRollforwardDetails" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansSharesAvailableforGrantRollforwardDetails">
        <link:definition>9955582 - Disclosure - Equity Award Plans (Shares Available for Grant Roll-forward) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansFairValueAssumptionsandGrantDateFairValuesDetails" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansFairValueAssumptionsandGrantDateFairValuesDetails">
        <link:definition>9955583 - Disclosure - Equity Award Plans (Fair Value Assumptions and Grant-Date Fair Values) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansShareBasedCompensationbyAwardTypesDetails" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansShareBasedCompensationbyAwardTypesDetails">
        <link:definition>9955584 - Disclosure - Equity Award Plans (Share-Based Compensation by Award Types) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansAllocationofShareBasedCompensationExpenseDetails" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansAllocationofShareBasedCompensationExpenseDetails">
        <link:definition>9955585 - Disclosure - Equity Award Plans (Allocation of Share Based Compensation Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquityAwardPlansAllocationofShareBasedCompensationExpenseDetails_1" roleURI="http://www.paloaltonetworks.com/role/EquityAwardPlansAllocationofShareBasedCompensationExpenseDetails_1">
        <link:definition>9955585 - Disclosure - Equity Award Plans (Allocation of Share Based Compensation Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofComponentsofIncomeBeforeIncomeTaxesDetails" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxesScheduleofComponentsofIncomeBeforeIncomeTaxesDetails">
        <link:definition>9955586 - Disclosure - Income Taxes (Schedule of Components of Income Before Income Taxes) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofComponentsofIncomeTaxExpenseBenefitDetails" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxesScheduleofComponentsofIncomeTaxExpenseBenefitDetails">
        <link:definition>9955587 - Disclosure - Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxesNarrativeDetails">
        <link:definition>9955588 - Disclosure - Income Taxes (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofEffectiveTaxRateReconciliationDetails" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxesScheduleofEffectiveTaxRateReconciliationDetails">
        <link:definition>9955589 - Disclosure - Income Taxes (Schedule of Effective Tax Rate Reconciliation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofComponentsoftheDeferredTaxAssetsandLiabilitiesDetails" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxesScheduleofComponentsoftheDeferredTaxAssetsandLiabilitiesDetails">
        <link:definition>9955590 - Disclosure - Income Taxes (Schedule of Components of the Deferred Tax Assets and Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofUnrecognizedTaxBenefitDetails" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxesScheduleofUnrecognizedTaxBenefitDetails">
        <link:definition>9955591 - Disclosure - Income Taxes (Schedule of Unrecognized Tax Benefit) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofCashFlowSupplementalDisclosuresDetails" roleURI="http://www.paloaltonetworks.com/role/IncomeTaxesScheduleofCashFlowSupplementalDisclosuresDetails">
        <link:definition>9955592 - Disclosure - Income Taxes (Schedule of Cash Flow, Supplemental Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomePerShareScheduleofComputationofBasicandDilutedNetIncomePerShareDetails" roleURI="http://www.paloaltonetworks.com/role/NetIncomePerShareScheduleofComputationofBasicandDilutedNetIncomePerShareDetails">
        <link:definition>9955593 - Disclosure - Net Income Per Share (Schedule of Computation of Basic and Diluted Net Income Per Share) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomePerShareScheduleofAntidilutiveSecuritiesExcludedfromComputationDetails" roleURI="http://www.paloaltonetworks.com/role/NetIncomePerShareScheduleofAntidilutiveSecuritiesExcludedfromComputationDetails">
        <link:definition>9955594 - Disclosure - Net Income Per Share (Schedule of Antidilutive Securities Excluded from Computation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIncomeExpenseNetDetails" roleURI="http://www.paloaltonetworks.com/role/OtherIncomeExpenseNetDetails">
        <link:definition>9955595 - Disclosure - Other Income (Expense), Net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationNarrativeDetails" roleURI="http://www.paloaltonetworks.com/role/SegmentInformationNarrativeDetails">
        <link:definition>9955596 - Disclosure - Segment Information (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationLonglivedAssetsbyGeographicRegionDetails" roleURI="http://www.paloaltonetworks.com/role/SegmentInformationLonglivedAssetsbyGeographicRegionDetails">
        <link:definition>9955597 - Disclosure - Segment Information (Long-lived Assets by Geographic Region) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="panw_AuditorInformationAbstract" abstract="true" name="AuditorInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="panw_OtherNonoperatingIncomeExpenseNet" abstract="false" name="OtherNonoperatingIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_ReplacementEquityAwardsMember" abstract="true" name="ReplacementEquityAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ReclassificationBetweenLiabilityClassifiedAndEquityClassifiedAwards" abstract="false" name="ReclassificationBetweenLiabilityClassifiedAndEquityClassifiedAwards" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_NoteHedgesExercisesInPeriodSharesReceived" abstract="false" name="NoteHedgesExercisesInPeriodSharesReceived" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="panw_StockIssuedDuringPeriodSharesSettlementofWarrants" abstract="false" name="StockIssuedDuringPeriodSharesSettlementofWarrants" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="panw_ChangeInFairValueOfConvertibleSeniorNotesAndDerivativeAsset" abstract="false" name="ChangeInFairValueOfConvertibleSeniorNotesAndDerivativeAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_IncreaseDecreaseInCapitalizedContractCost" abstract="false" name="IncreaseDecreaseInCapitalizedContractCost" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_RestrictedCashIncludedInPrepaidExpensesAndOtherCurrentAssets" abstract="false" name="RestrictedCashIncludedInPrepaidExpensesAndOtherCurrentAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_RestrictedCashIncludedInOtherAssets" abstract="false" name="RestrictedCashIncludedInOtherAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_BusinessCombinationContingentConsideration" abstract="false" name="BusinessCombinationContingentConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_InterestPaidContractualInterest" abstract="false" name="InterestPaidContractualInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_ConvertibleDebtOtherDetailsTableTextBlock" abstract="false" name="ConvertibleDebtOtherDetailsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="panw_ScheduleofNoteHedgeTransactionsTableTextBlock" abstract="false" name="ScheduleofNoteHedgeTransactionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="panw_ScheduleofSharebasedCompensationSharesAvailableforGrantTableTextBlock" abstract="false" name="ScheduleofSharebasedCompensationSharesAvailableforGrantTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="panw_FourDistributorsMember" abstract="true" name="FourDistributorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_CustomerAMember" abstract="true" name="CustomerAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_CustomerBMember" abstract="true" name="CustomerBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_FinancingReceivablePaymentTerm" abstract="false" name="FinancingReceivablePaymentTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="panw_ComputersComputerEquipmentAndSoftwareMember" abstract="true" name="ComputersComputerEquipmentAndSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_DemonstrationunitsMember" abstract="true" name="DemonstrationunitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_RevenueFromContractWithCustomerContractTerm" abstract="false" name="RevenueFromContractWithCustomerContractTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="panw_ContractWithCustomerPaymentTerms" abstract="false" name="ContractWithCustomerPaymentTerms" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="panw_OtherAmericasMember" abstract="true" name="OtherAmericasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_SubscriptionMember" abstract="true" name="SubscriptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_SupportMember" abstract="true" name="SupportMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_PrepaidExpensesandOtherCurrentAssetsFairValueDisclosure" abstract="false" name="PrepaidExpensesandOtherCurrentAssetsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_DeferredCompensationLiabilityCurrentFairValue" abstract="false" name="DeferredCompensationLiabilityCurrentFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_DeferredCompensationLiabilityNonCurrentFairValue" abstract="false" name="DeferredCompensationLiabilityNonCurrentFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag" abstract="false" name="FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleListNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="panw_DebtSecuritiesAvailableForSaleMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughThreeYearsAmortizedCost" abstract="false" name="DebtSecuritiesAvailableForSaleMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughThreeYearsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_DebtSecuritiesAvailableForSaleMaturityAllocatedAndSingleMaturityDateRollingAfterThreeThroughFiveYearsAmortizedCost" abstract="false" name="DebtSecuritiesAvailableForSaleMaturityAllocatedAndSingleMaturityDateRollingAfterThreeThroughFiveYearsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_DebtSecuritiesAvailableForSaleMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughThreeYearsFairValue" abstract="false" name="DebtSecuritiesAvailableForSaleMaturityAllocatedAndSingleMaturityDateRollingAfterOneThroughThreeYearsFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_DebtSecuritiesAvailableForSaleMaturityAllocatedAndSingleMaturityDateRollingAfterThreeThroughFiveYearsFairValue" abstract="false" name="DebtSecuritiesAvailableForSaleMaturityAllocatedAndSingleMaturityDateRollingAfterThreeThroughFiveYearsFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_FinancingReceivableUnamortizedLoanCostFeeCurrent" abstract="false" name="FinancingReceivableUnamortizedLoanCostFeeCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_FinancingReceivableUnearnedIncomeBeforeAllowanceForCreditLossNoncurrent" abstract="false" name="FinancingReceivableUnearnedIncomeBeforeAllowanceForCreditLossNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_InternalCreditRiskRating1To4Member" abstract="true" name="InternalCreditRiskRating1To4Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_InternalCreditRiskRating5To6Member" abstract="true" name="InternalCreditRiskRating5To6Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_InternalCreditRiskRating7To10Member" abstract="true" name="InternalCreditRiskRating7To10Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ChronosphereInc.Member" abstract="true" name="ChronosphereInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_CyberArkSoftwareLtd.Member" abstract="true" name="CyberArkSoftwareLtd.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_KoiSecurityLtdMember" abstract="true" name="KoiSecurityLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_PortkeyIncMember" abstract="true" name="PortkeyIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_EmbraceMobileInc.Member" abstract="true" name="EmbraceMobileInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ConsoleSystemsIncMember" abstract="true" name="ConsoleSystemsIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ChronosphereAndCyberArkMember" abstract="true" name="ChronosphereAndCyberArkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_IBMsQRadarAssetsMember" abstract="true" name="IBMsQRadarAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ProtectAIMember" abstract="true" name="ProtectAIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_DigSecuritySolutionsLtdMember" abstract="true" name="DigSecuritySolutionsLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_TalonCyberSecurityLtdMember" abstract="true" name="TalonCyberSecurityLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_BusinessCombinationLiabilityAssumedFairValueGainLoss" abstract="false" name="BusinessCombinationLiabilityAssumedFairValueGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_BusinessCombinationConsiderationTransferredReturned" abstract="false" name="BusinessCombinationConsiderationTransferredReturned" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_BusinessCombinationConsiderationTransferredReturnedAmountReceived" abstract="false" name="BusinessCombinationConsiderationTransferredReturnedAmountReceived" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_BusinessAcquisitionReplacementEquityAwardsFairValue" abstract="false" name="BusinessAcquisitionReplacementEquityAwardsFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_BusinessCombinationRecognizedAssetAcquiredShortTermAndLongTermInvestments" abstract="false" name="BusinessCombinationRecognizedAssetAcquiredShortTermAndLongTermInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_BusinessCombinationRecognizedAssetAcquiredDeferredRevenue" abstract="false" name="BusinessCombinationRecognizedAssetAcquiredDeferredRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_PlatformRenewalsMember" abstract="true" name="PlatformRenewalsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_EmployeeSeverenceCashCompensationMember" abstract="true" name="EmployeeSeverenceCashCompensationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_EmployeeSeverenceShareBasedCompensationMember" abstract="true" name="EmployeeSeverenceShareBasedCompensationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_CustomerRelationshipsAndPlatformRenewalsMember" abstract="true" name="CustomerRelationshipsAndPlatformRenewalsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_SantaClaraCaliforniaMember" abstract="true" name="SantaClaraCaliforniaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_NumberOfAcresOfLandPurchased" abstract="false" name="NumberOfAcresOfLandPurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:areaItemType"/>
  <xs:element id="panw_A2025NotesMember" abstract="true" name="A2025NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ScheduleofNoteHedgeTransactionsTable" abstract="true" name="ScheduleofNoteHedgeTransactionsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="panw_NoteHedgeAxis" abstract="true" name="NoteHedgeAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="panw_NoteHedgeDomain" abstract="true" name="NoteHedgeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_A2025NoteHedgesMember" abstract="true" name="A2025NoteHedgesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ScheduleofNoteHedgeTransactionsLineItems" abstract="true" name="ScheduleofNoteHedgeTransactionsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="panw_SharesOfCommonStockCoveredByNoteHedges" abstract="false" name="SharesOfCommonStockCoveredByNoteHedges" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="panw_PurchaseofNoteHedges" abstract="false" name="PurchaseofNoteHedges" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_A2025WarrantsMember" abstract="true" name="A2025WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ClassOfWarrantOrRightThresholdTradingDays" abstract="false" name="ClassOfWarrantOrRightThresholdTradingDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="panw_StockIssuedDuringPeriodValueSettlementOfWarrants" abstract="false" name="StockIssuedDuringPeriodValueSettlementOfWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_ConvertibleSeniorNotesDue2030Member" abstract="true" name="ConvertibleSeniorNotesDue2030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_DebtInstrumentFaceAmountSurrenderedToConversion" abstract="false" name="DebtInstrumentFaceAmountSurrenderedToConversion" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_ChangeInFairValueOfConvertibleSeniorNotes" abstract="false" name="ChangeInFairValueOfConvertibleSeniorNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_ChangesInFairValueAttributableToInstrumentSpecificCreditRisk" abstract="false" name="ChangesInFairValueAttributableToInstrumentSpecificCreditRisk" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_DerivativeAssetStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag" abstract="false" name="DerivativeAssetStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:booleanItemType"/>
  <xs:element id="panw_LineofCreditFacilityOptionforAdditionalBorrowingCapacity1" abstract="false" name="LineofCreditFacilityOptionforAdditionalBorrowingCapacity1" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_NumberOfLeaseAmendments" abstract="false" name="NumberOfLeaseAmendments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="panw_OperatingLeaseExpectedPaymentsNet" abstract="false" name="OperatingLeaseExpectedPaymentsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_CloudMember" abstract="true" name="CloudMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_OtherPurchaseObligationMember" abstract="true" name="OtherPurchaseObligationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ServiceProviderPurchaseCommitmentMember" abstract="true" name="ServiceProviderPurchaseCommitmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_CovenantNottoSueAgreementAmount" abstract="false" name="CovenantNottoSueAgreementAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_CovenantNotToSueAgreementDuration" abstract="false" name="CovenantNotToSueAgreementDuration" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="panw_StockRepurchasedDuringPeriodWeightedAveragePricePerShare" abstract="false" name="StockRepurchasedDuringPeriodWeightedAveragePricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="panw_PerformanceStockUnitsPSUsMember" abstract="true" name="PerformanceStockUnitsPSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_PerformanceStockUnitsPSUsSubjectToServiceAndMarketConditionsMember" abstract="true" name="PerformanceStockUnitsPSUsSubjectToServiceAndMarketConditionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_PerformanceStockUnitsPSUsSubjectToServicePerformanceAndMarketConditionsMember" abstract="true" name="PerformanceStockUnitsPSUsSubjectToServicePerformanceAndMarketConditionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_PerformanceStockOptionsMember" abstract="true" name="PerformanceStockOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_A2021EquityIncentivePlanMember" abstract="true" name="A2021EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_A2012EmployeeStockPurchasePlanMember" abstract="true" name="A2012EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_MarketConditionAxis" abstract="true" name="MarketConditionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="panw_MarketConditionDomain" abstract="true" name="MarketConditionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_MarketConditionStockPriceTargetsMember" abstract="true" name="MarketConditionStockPriceTargetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_MarketConditionTotalShareholderReturnVsStandardPoors500IndexMember" abstract="true" name="MarketConditionTotalShareholderReturnVsStandardPoors500IndexMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ShareBasedPaymentArrangementTrancheFourMember" abstract="true" name="ShareBasedPaymentArrangementTrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_CyberArkAndKoiMember" abstract="true" name="CyberArkAndKoiMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_ShareBasedCompensationPaymentAwardPerformanceTargetStockPriceCommonStockPrice" abstract="false" name="ShareBasedCompensationPaymentAwardPerformanceTargetStockPriceCommonStockPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="panw_ShareBasedCompensationArrangementShareBasedPaymentAwardVestingConditionThresholdAverageClosingPriceDays" abstract="false" name="ShareBasedCompensationArrangementShareBasedPaymentAwardVestingConditionThresholdAverageClosingPriceDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="panw_SharebasedCompensationArrangementbySharebasedPaymentAwardOfferingPeriod" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardOfferingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="panw_PurchasePeriodsInEmployeeStockPurchasePlanESPPOfferingPeriod" abstract="false" name="PurchasePeriodsInEmployeeStockPurchasePlanESPPOfferingPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="panw_SharebasedCompensationArrangementbySharebasedPaymentAwardPurchasePeriod" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardPurchasePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="panw_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumPurchaseOfCommonStockValuePerEmployee" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumPurchaseOfCommonStockValuePerEmployee" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_ChronosphereCyberArkKoiAndPortkeyMember" abstract="true" name="ChronosphereCyberArkKoiAndPortkeyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_SharebasedCompensationArrangementbySharebasedPaymentAwardSharesAvailableforGrantRollForward" abstract="true" name="SharebasedCompensationArrangementbySharebasedPaymentAwardSharesAvailableforGrantRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="panw_SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofGrantsinPeriod" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofGrantsinPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="panw_SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofForfeituresinPeriod" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofForfeituresinPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="panw_RestrictedStockUnitsAndRestrictedStockAwardsMember" abstract="true" name="RestrictedStockUnitsAndRestrictedStockAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_OtherAwardsMember" abstract="true" name="OtherAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_NetChangeInIncomeTaxExpenseBenefit" abstract="false" name="NetChangeInIncomeTaxExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateReducedStatutoryRateDifferentialAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateReducedStatutoryRateDifferentialAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationCrossBorderSubpartFIncomeAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationCrossBorderSubpartFIncomeAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationCrossBorderBranchIncomeLossAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationCrossBorderBranchIncomeLossAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseConvertibleDebtFairMarketValueAdjustmentsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseConvertibleDebtFairMarketValueAdjustmentsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsRestructuringAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsRestructuringAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateReducedStatutoryRateDifferentialPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateReducedStatutoryRateDifferentialPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationCrossBorderSubpartFIncomePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationCrossBorderSubpartFIncomePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationCrossBorderBranchIncomeLossPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationCrossBorderBranchIncomeLossPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseConvertibleDebtFairMarketValueAdjustmentsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseConvertibleDebtFairMarketValueAdjustmentsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="panw_EffectiveIncomeTaxRateReconciliationOtherAdjustmentsRestructuringPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationOtherAdjustmentsRestructuringPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="panw_DeferredTaxAssetsOperatingLeaseLiabilities" abstract="false" name="DeferredTaxAssetsOperatingLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_DeferredTaxAssetsFixedAssetsAndIntangibleAssets" abstract="false" name="DeferredTaxAssetsFixedAssetsAndIntangibleAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_DeferredTaxLiabilitiesDomesticEffectOfForeignTaxAssets" abstract="false" name="DeferredTaxLiabilitiesDomesticEffectOfForeignTaxAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="panw_RestrictedStockUnitsRSUsandPerformanceStockUnitsPSUsMember" abstract="true" name="RestrictedStockUnitsRSUsandPerformanceStockUnitsPSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_CountriesExcludingUnitedStatesAndIsraelMember" abstract="true" name="CountriesExcludingUnitedStatesAndIsraelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="panw_WilliamD.JenkinsJr.Member" abstract="true" name="WilliamD.JenkinsJr.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
