diff --git a/eng/pipelines/common/platform-matrix.yml b/eng/pipelines/common/platform-matrix.yml
index d6c8f71f4792ef..084bf83ab1df8c 100644
--- a/eng/pipelines/common/platform-matrix.yml
+++ b/eng/pipelines/common/platform-matrix.yml
@@ -895,24 +895,6 @@ jobs:
         helixQueueGroup: ${{ parameters.helixQueueGroup }}
         ${{ insert }}: ${{ parameters.jobParameters }}
 
-# Windows arm
-- ${{ if or(containsValue(parameters.platforms, 'windows_arm'), eq(parameters.platformGroup, 'all')) }}:
-  - template: xplat-setup.yml
-    parameters:
-      jobTemplate: ${{ parameters.jobTemplate }}
-      helixQueuesTemplate: ${{ parameters.helixQueuesTemplate }}
-      variables: ${{ parameters.variables }}
-      osGroup: windows
-      archType: arm
-      targetRid: win-arm
-      platform: windows_arm
-      shouldContinueOnError: ${{ parameters.shouldContinueOnError }}
-      jobParameters:
-        runtimeFlavor: ${{ parameters.runtimeFlavor }}
-        buildConfig: ${{ parameters.buildConfig }}
-        helixQueueGroup: ${{ parameters.helixQueueGroup }}
-        ${{ insert }}: ${{ parameters.jobParameters }}
-
 # Windows arm64
 
 - ${{ if or(containsValue(parameters.platforms, 'windows_arm64'), in(parameters.platformGroup, 'all', 'gcstress')) }}:
diff --git a/eng/pipelines/common/templates/runtimes/run-test-job.yml b/eng/pipelines/common/templates/runtimes/run-test-job.yml
index e7550889d02e9b..32fa4e486c22ad 100644
--- a/eng/pipelines/common/templates/runtimes/run-test-job.yml
+++ b/eng/pipelines/common/templates/runtimes/run-test-job.yml
@@ -537,8 +537,8 @@ jobs:
           - defaultpgo
         ${{ if in(parameters.testGroup, 'pgostress') }}:
           # We run a limited number of scenarios on the win-arm64 queues as we hit frequent timeouts on those queues otherwise.
-          # The loss of coverage is not critical as win-arm64/win-arm32 are practically equivalent to linux-arm64/linux-arm32 to the JIT.
-          ${{ if and(eq(parameters.osGroup, 'windows'), or(eq(parameters.archType, 'arm64'), eq(parameters.archType, 'arm'))) }}:
+          # The loss of coverage is not critical as win-arm64 is practically equivalent to linux-arm64 to the JIT.
+          ${{ if and(eq(parameters.osGroup, 'windows'), eq(parameters.archType, 'arm64')) }}:
             scenarios:
             - fullpgo
             - fullpgo_random_gdv_edge
@@ -571,7 +571,7 @@ jobs:
           - jitelthookenabled
           - jitelthookenabled_tiered
         ${{ if in(parameters.testGroup, 'jit-experimental') }}:
-          ${{ if and(eq(parameters.osGroup, 'windows'), or(eq(parameters.archType, 'arm64'), eq(parameters.archType, 'arm'))) }}:
+          ${{ if and(eq(parameters.osGroup, 'windows'), eq(parameters.archType, 'arm64')) }}:
             scenarios:
             - jitosr_stress
             - jitpartialcompilation_pgo
diff --git a/eng/pipelines/coreclr/ci.yml b/eng/pipelines/coreclr/ci.yml
index 0272bf2a7acb6a..209314a136702f 100644
--- a/eng/pipelines/coreclr/ci.yml
+++ b/eng/pipelines/coreclr/ci.yml
@@ -51,7 +51,6 @@ extends:
           - linux_x64
           - osx_arm64
           - osx_x64
-          - windows_arm
           - windows_arm64
           jobParameters:
             testGroup: outerloop
@@ -148,7 +147,6 @@ extends:
           - osx_x64
           - windows_x64
           - windows_x86
-          - windows_arm
           - windows_arm64
           helixQueueGroup: ci
           helixQueuesTemplate: /eng/pipelines/coreclr/templates/helix-queues-setup.yml
diff --git a/eng/pipelines/coreclr/pgo.yml b/eng/pipelines/coreclr/pgo.yml
index d5c3efba0d9b5b..1ed140014a6104 100644
--- a/eng/pipelines/coreclr/pgo.yml
+++ b/eng/pipelines/coreclr/pgo.yml
@@ -24,7 +24,6 @@ extends:
           - linux_arm64
           - linux_x64
           - osx_arm64
-          - windows_arm
           - windows_arm64
           - windows_x64
           - windows_x86
@@ -50,7 +49,6 @@ extends:
           - linux_arm64
           - linux_x64
           - osx_arm64
-          - windows_arm
           - windows_arm64
           - windows_x64
           - windows_x86
diff --git a/eng/pipelines/coreclr/pgostress.yml b/eng/pipelines/coreclr/pgostress.yml
index 3d0a8beef0b96b..d1e9d833eb38f4 100644
--- a/eng/pipelines/coreclr/pgostress.yml
+++ b/eng/pipelines/coreclr/pgostress.yml
@@ -24,7 +24,6 @@ extends:
           - linux_arm64
           - linux_x64
           - osx_arm64
-          - windows_arm
           - windows_arm64
           - windows_x64
           - windows_x86
@@ -50,7 +49,6 @@ extends:
           - linux_arm64
           - linux_x64
           - osx_arm64
-          - windows_arm
           - windows_arm64
           - windows_x64
           - windows_x86
diff --git a/eng/pipelines/coreclr/r2r.yml b/eng/pipelines/coreclr/r2r.yml
index ea4a7f99b5b9eb..e881234a956f32 100644
--- a/eng/pipelines/coreclr/r2r.yml
+++ b/eng/pipelines/coreclr/r2r.yml
@@ -24,7 +24,6 @@ extends:
           - linux_arm64
           - linux_x64
           - osx_arm64
-          - windows_arm
           - windows_arm64
           - windows_x64
           - windows_x86
@@ -50,7 +49,6 @@ extends:
           - linux_arm64
           - linux_x64
           - osx_arm64
-          - windows_arm
           - windows_arm64
           - windows_x64
           - windows_x86
diff --git a/eng/pipelines/coreclr/templates/build-job.yml b/eng/pipelines/coreclr/templates/build-job.yml
index ea400d3e52e8e5..7679cca27fa54b 100644
--- a/eng/pipelines/coreclr/templates/build-job.yml
+++ b/eng/pipelines/coreclr/templates/build-job.yml
@@ -104,8 +104,8 @@ jobs:
         value: '/p:OfficialBuildId=$(Build.BuildNumber)'
     - name: enforcePgoArg
       value: ''
-    # The EnforcePGO script is only supported on Windows and is not supported on arm or arm64.
-    - ${{ if and(eq(parameters.buildConfig, 'Release'), and(eq(parameters.osGroup, 'windows'), not(or(eq(parameters.archType, 'arm64'), eq(parameters.archType, 'arm')))), ne(parameters.pgoType, 'pgo')) }}:
+    # The EnforcePGO script is only supported on Windows and is not supported on arm64.
+    - ${{ if and(eq(parameters.buildConfig, 'Release'), and(eq(parameters.osGroup, 'windows'), ne(parameters.archType, 'arm64')), ne(parameters.pgoType, 'pgo')) }}:
       - name: enforcePgoArg
         value: '-enforcepgo'
 
@@ -202,10 +202,6 @@ jobs:
       - script: $(Build.SourcesDirectory)/src/coreclr/build-runtime$(scriptExt) $(buildConfig) $(archType) -hostarch x64 $(osArg) -ci $(compilerArg) -component crosscomponents -cmakeargs "-DCLR_CROSS_COMPONENTS_BUILD=1" $(officialBuildIdArg) $(clrRuntimePortableBuildArg)
         displayName: Build CoreCLR Cross-Arch Tools (Tools that run on x64 targeting x86)
 
-    - ${{ if and(eq(parameters.osGroup, 'windows'), eq(parameters.archType, 'arm')) }}:
-      - script: $(Build.SourcesDirectory)/src/coreclr/build-runtime$(scriptExt) $(buildConfig) $(archType) -hostarch x86 $(osArg) -ci $(compilerArg) -component crosscomponents -cmakeargs "-DCLR_CROSS_COMPONENTS_BUILD=1" $(officialBuildIdArg) $(clrRuntimePortableBuildArg)
-        displayName: Build CoreCLR Cross-Arch Tools (Tools that run on x86 targeting arm)
-
     - ${{ if in(parameters.osGroup, 'osx', 'ios', 'tvos') }}:
       - script: |
           du -sh $(Build.SourcesDirectory)/*
diff --git a/eng/pipelines/coreclr/templates/helix-queues-setup.yml b/eng/pipelines/coreclr/templates/helix-queues-setup.yml
index 31751f32ed47b3..8fee96ad8d4a60 100644
--- a/eng/pipelines/coreclr/templates/helix-queues-setup.yml
+++ b/eng/pipelines/coreclr/templates/helix-queues-setup.yml
@@ -140,13 +140,6 @@ jobs:
       - ${{ if eq(variables['System.TeamProject'], 'internal') }}:
         - Windows.10.Amd64.X86.Rt
 
-    # windows arm
-    - ${{ if eq(parameters.platform, 'windows_arm') }}:
-      - ${{ if eq(variables['System.TeamProject'], 'public') }}:
-        - Windows.11.Arm64.Open
-      - ${{ if eq(variables['System.TeamProject'], 'internal') }}:
-        - Windows.11.Arm64
-
     # windows arm64
     - ${{ if eq(parameters.platform, 'windows_arm64') }}:
       - ${{ if eq(variables['System.TeamProject'], 'public') }}:
diff --git a/eng/pipelines/libraries/helix-queues-setup.yml b/eng/pipelines/libraries/helix-queues-setup.yml
index ac9304e1d692ec..355ca33e31c17d 100644
--- a/eng/pipelines/libraries/helix-queues-setup.yml
+++ b/eng/pipelines/libraries/helix-queues-setup.yml
@@ -175,10 +175,6 @@ jobs:
       - ${{ if eq(parameters.jobParameters.framework, 'net48') }}:
         - Windows.10.Amd64.Client.Open
 
-    # windows arm
-    - ${{ if eq(parameters.platform, 'windows_arm') }}:
-      - Windows.11.Arm64.Open
-
     # windows arm64
     - ${{ if eq(parameters.platform, 'windows_arm64') }}:
       - Windows.11.Arm64.Open
diff --git a/eng/pipelines/libraries/run-test-job.yml b/eng/pipelines/libraries/run-test-job.yml
index 0654ce7629aaf3..4fe91d22a9312f 100644
--- a/eng/pipelines/libraries/run-test-job.yml
+++ b/eng/pipelines/libraries/run-test-job.yml
@@ -189,7 +189,7 @@ jobs:
               - gcstress0xc_jitstress2
               - gcstress0xc_jitminopts_heapverify1
             ${{ if in(parameters.coreclrTestGroup, 'pgo') }}:
-              ${{ if and(eq(parameters.osGroup, 'windows'), or(eq(parameters.archType, 'arm64'), eq(parameters.archType, 'arm'))) }}:
+              ${{ if and(eq(parameters.osGroup, 'windows'), eq(parameters.archType, 'arm64')) }}:
                 scenarios:
                 - defaultpgo
               ${{ else }}:
diff --git a/eng/pipelines/runtime-official.yml b/eng/pipelines/runtime-official.yml
index 323f7784fed557..3718c536dde9da 100644
--- a/eng/pipelines/runtime-official.yml
+++ b/eng/pipelines/runtime-official.yml
@@ -71,7 +71,6 @@ extends:
           - linux_musl_arm64
           - windows_x86
           - windows_x64
-          - windows_arm
           - windows_arm64
           jobParameters:
             isOfficialBuild: ${{ variables.isOfficialBuild }}
@@ -95,7 +94,6 @@ extends:
             - linux_musl_arm
             - linux_musl_arm64
             - windows_x64
-            - windows_arm
             - windows_arm64
 
       #
@@ -157,7 +155,6 @@ extends:
           # - linux_musl_arm64
           - windows_x64
           - windows_x86
-          # - windows_arm
           # - windows_arm64
           jobParameters:
             buildArgs: -s mono+libs+host+packs -c $(_BuildConfig)
@@ -348,7 +345,6 @@ extends:
           # - linux_musl_arm64
           # - windows_x64
           # - windows_x86
-          # - windows_arm
           # - windows_arm64
           jobTemplates:
           # LLVMJIT
@@ -396,7 +392,6 @@ extends:
           - linux_musl_arm64
           - windows_x86
           - windows_x64
-          - windows_arm
           - windows_arm64
           jobParameters:
             isOfficialBuild: ${{ variables.isOfficialBuild }}
@@ -459,7 +454,6 @@ extends:
           - linux_musl_arm64
           - windows_x86
           - windows_x64
-          - windows_arm
           - windows_arm64
 
       #
diff --git a/eng/pipelines/runtime.yml b/eng/pipelines/runtime.yml
index 36c91077c0b714..025997aadde2c2 100644
--- a/eng/pipelines/runtime.yml
+++ b/eng/pipelines/runtime.yml
@@ -82,7 +82,6 @@ extends:
           - tizen_armel
           - windows_x86
           - windows_x64
-          - windows_arm
           - windows_arm64
           jobParameters:
             testGroup: innerloop
@@ -151,7 +150,6 @@ extends:
           - linux_musl_arm64
           - windows_x64
           - windows_x86
-          - windows_arm
           - windows_arm64
           - freebsd_x64
           jobParameters:
@@ -710,7 +708,6 @@ extends:
           # - linux_musl_arm64
           - windows_x64
           - windows_x86
-          # - windows_arm
           # - windows_arm64
           jobParameters:
             condition: >-
@@ -733,7 +730,6 @@ extends:
           # - linux_musl_arm64
           - windows_x64
           # - windows_x86
-          # - windows_arm
           # - windows_arm64
           jobParameters:
             runtimeVariant: crossaot
@@ -810,7 +806,6 @@ extends:
           # - linux_musl_arm64
           - windows_x64
           - windows_x86
-          # - windows_arm
           # - windows_arm64
           jobParameters:
             condition: >-
@@ -873,7 +868,6 @@ extends:
           - linux_arm
           - linux_musl_arm
           - linux_musl_arm64
-          - windows_arm
           - windows_arm64
           - windows_x86
           jobParameters:
@@ -986,7 +980,6 @@ extends:
             - linux_musl_arm
             - linux_musl_arm64
             - windows_x86
-            - windows_arm
             - windows_arm64
             - linux_arm
           jobParameters: