diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 770efe40..4ac11926 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -9,8 +9,11 @@ jobs:
       # Don't cancel the macOS build if the Linux build fails, etc.
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macos-11]
+        os: [ubuntu-20.04, macos-11, windows-2019]
         use-asan: [YES, NO]
+        exclude:
+          - os: windows-2019
+            use-asan: YES
     env:
         # Expose to the build-*.sh in an environment variable
         USE_ASAN: ${{ matrix.use-asan }}
@@ -19,6 +22,11 @@ jobs:
       with:
         submodules: 'recursive'
 
+    # https://github.com/ilammy/msvc-dev-cmd
+    - name: Setup MSVC environment
+      if: runner.os == 'Windows' 
+      uses: ilammy/msvc-dev-cmd@v1
+
     - name: Linux Build
       if: runner.os == 'Linux'
       run: |
@@ -31,3 +39,45 @@ jobs:
       if: runner.os == 'macOS'
       run: |
           ./build-osx.sh
+
+    - name: Windows Build
+      if: runner.os == 'Windows'
+      run: |
+          .\build-windows.ps1
+
+    # Upload artifacts.
+    # These need to be separate, otherwise all of the artifacts are bundled into
+    # one .zip file.
+
+    - name: Upload win64 artifact
+      uses: actions/upload-artifact@v3
+      if: ${{ runner.os == 'Windows' && matrix.use-asan == 'NO' }}
+      with:
+        path: |
+          build-windows/ericw-tools-*.zip
+
+    - name: Upload Linux artifact
+      uses: actions/upload-artifact@v3
+      if: ${{ runner.os == 'Linux' && matrix.use-asan == 'NO' }}
+      with:
+        path: |
+          build-linux/ericw-tools-*.zip
+
+    - name: Upload macOS artifact
+      uses: actions/upload-artifact@v3
+      if: ${{ runner.os == 'macOS' && matrix.use-asan == 'NO' }}
+      with:
+        path: |
+          build-osx/ericw-tools-*.zip
+
+    - name: Create GitHub Release and upload builds
+      uses: softprops/action-gh-release@v1
+      if: ${{ startsWith(github.ref, 'refs/tags/') && matrix.use-asan == 'NO' }}
+      with:
+        draft: true
+        files: |
+          build-osx/ericw-tools-*.zip
+          build-linux/ericw-tools-*.zip
+          build-windows/ericw-tools-*.zip
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/build-windows.ps1 b/build-windows.ps1
new file mode 100644
index 00000000..e7b48820
--- /dev/null
+++ b/build-windows.ps1
@@ -0,0 +1,47 @@
+# Download embree and tbb
+Invoke-WebRequest 'https://github.com/embree/embree/releases/download/v3.12.1/embree-3.12.1.x64.vc14.windows.zip' -OutFile 'embree64.zip'
+7z x embree64.zip -oc:\
+Invoke-WebRequest 'https://github.com/oneapi-src/oneTBB/releases/download/v2020.2/tbb-2020.2-win.zip' -OutFile 'tbb.zip'
+7z x tbb.zip -oc:\
+
+git submodule update --init --recursive
+
+# Create and activate a Python virtual environment, and install sphinx (for building our documentation)
+py -m venv ericwtools-env
+Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+ericwtools-env\Scripts\Activate.ps1
+python.exe -m pip install sphinx_rtd_theme
+
+# Confirm Sphinx is installed
+get-command sphinx-build
+
+choco install ninja
+
+mkdir build-windows
+cd build-windows
+
+cmake .. -GNinja -Dembree_DIR="C:\embree-3.12.1.x64.vc14.windows" -DTBB_DIR="C:\tbb\cmake" -DCMAKE_BUILD_TYPE=Release
+
+ninja
+if ( $? -eq $false ) {
+  throw "build failed"
+}
+
+cpack
+if ( $? -eq $false ) {
+  throw "package failed"
+}
+
+.\tests\Release\tests.exe
+
+if ( $? -eq $false ) {
+  throw "tests failed"
+}
+
+# run hidden tests (releaseonly)
+.\tests\Release\tests.exe [.]
+
+if ( $? -eq $false ) {
+  throw "tests [.] failed"
+}
+