diff --git a/.github/workflows/build-wheel.yml b/.github/workflows/build-wheel.yml
index 78f53b34..e9291e79 100644
--- a/.github/workflows/build-wheel.yml
+++ b/.github/workflows/build-wheel.yml
@@ -88,7 +88,7 @@ jobs:
           echo "Verifying wheels using twine check"
           twine check dist/*
 
-      - name: Build Windows wheel (x64)
+      - name: Build Windows wheel
         if: runner.os == 'Windows'
         shell: pwsh
         run: |
@@ -107,6 +107,7 @@ jobs:
           # Download native artifacts
           Write-Host "Starting artifact download process..."
           Write-Host "C2PA_VERSION: $env:C2PA_VERSION"
+          Write-Host "Architecture: ${{ inputs.architecture }}"
 
           python scripts/download_artifacts.py "$env:C2PA_VERSION"
 
@@ -115,8 +116,15 @@ jobs:
           Write-Host "src/c2pa/libs directory contents:"
           Get-ChildItem -Recurse -Path src/c2pa/libs
 
+          # Set platform tag based on architecture
+          if ("${{ inputs.architecture }}" -eq "arm64") {
+            $PLATFORM_TAG = "win_arm64"
+          } else {
+            $PLATFORM_TAG = "win_amd64"
+          }
+
           # Build wheel
-          python setup.py bdist_wheel --plat-name win_amd64
+          python setup.py bdist_wheel --plat-name $PLATFORM_TAG
 
           # Verify wheel structure
           twine check dist/*
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6cab3c53..5b489d21 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -128,7 +128,16 @@ jobs:
       github.event.pull_request.user.login == 'dependabot[bot]' ||
       contains(github.event.pull_request.labels.*.name, 'safe to test')
 
-    runs-on: windows-latest
+    runs-on: ${{ matrix.runs-on }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runs-on: windows-latest
+            python-version: "3.10"
+          - runs-on: windows-11-arm
+            python-version: "3.11"  # 3.10 has no win-arm64 build in actions/python-versions
 
     steps:
       - name: Checkout repository
@@ -137,9 +146,17 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
+          python-version: ${{ matrix.python-version }}
           cache: "pip"
 
+      - name: Install OpenSSL via vcpkg (Windows ARM64)
+        if: matrix.runs-on == 'windows-11-arm'
+        shell: pwsh
+        run: |
+          & "$env:VCPKG_INSTALLATION_ROOT\vcpkg.exe" install openssl:arm64-windows
+          $opensslRoot = "$env:VCPKG_INSTALLATION_ROOT\installed\arm64-windows"
+          echo "OPENSSL_DIR=$opensslRoot" >> $env:GITHUB_ENV
+
       - name: Install project dependencies
         run: python -m pip install -r requirements.txt
 
@@ -277,13 +294,17 @@ jobs:
       python-version: "3.10"
       architecture: ${{ matrix.target }}
       artifact-name: wheels-windows-${{ matrix.target }}
-      runs-on: windows-latest
+      runs-on: ${{ matrix.runs-on }}
       c2pa-version: ${{ needs.read-version.outputs.c2pa-native-version }}
     secrets:
       github-token: ${{ secrets.GITHUB_TOKEN }}
     strategy:
       matrix:
-        target: [x64]
+        include:
+          - target: x64
+            runs-on: windows-latest
+          - target: arm64
+            runs-on: windows-11-arm
     if: |
       github.event_name != 'pull_request' ||
       github.event.pull_request.author_association == 'COLLABORATOR' ||
@@ -294,10 +315,17 @@ jobs:
   test-built-windows-wheel:
     name: Test Windows built wheel
     needs: build-windows-wheel
-    runs-on: windows-latest
+    runs-on: ${{ matrix.runs-on }}
     strategy:
+      fail-fast: false
       matrix:
-        target: [x64]
+        include:
+          - target: x64
+            runs-on: windows-latest
+            python-version: "3.10"
+          - target: arm64
+            runs-on: windows-11-arm
+            python-version: "3.11"  # 3.10 has no win-arm64 build in actions/python-versions
     if: |
       github.event_name != 'pull_request' ||
       github.event.pull_request.author_association == 'COLLABORATOR' ||
@@ -312,7 +340,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.10"
+          python-version: ${{ matrix.python-version }}
           cache: "pip"
 
       - name: Download wheel artifacts
diff --git a/setup.py b/setup.py
index 489472c1..d482b6fd 100644
--- a/setup.py
+++ b/setup.py
@@ -41,6 +41,7 @@ def get_version():
     'aarch64-apple-darwin': 'dylib',
     'x86_64-apple-darwin': 'dylib',
     'x86_64-pc-windows-msvc': 'dll',
+    'aarch64-pc-windows-msvc': 'dll',
     'x86_64-unknown-linux-gnu': 'so',
     'aarch64-unknown-linux-gnu': 'so',
 }