diff --git a/.azure-pipelines/azure-pipelines-win.yml b/.azure-pipelines/azure-pipelines-win.yml
index d5d5b9980..90c445031 100755
--- a/.azure-pipelines/azure-pipelines-win.yml
+++ b/.azure-pipelines/azure-pipelines-win.yml
@@ -14,6 +14,12 @@ jobs:
       win_64_freethreadingyes:
         CONFIG: win_64_freethreadingyes
         UPLOAD_PACKAGES: 'True'
+      win_arm64_freethreadingno:
+        CONFIG: win_arm64_freethreadingno
+        UPLOAD_PACKAGES: 'True'
+      win_arm64_freethreadingyes:
+        CONFIG: win_arm64_freethreadingyes
+        UPLOAD_PACKAGES: 'True'
   timeoutInMinutes: 360
   variables:
     CONDA_BLD_PATH: D:\\bld\\
diff --git a/.ci_support/win_arm64_freethreadingno.yaml b/.ci_support/win_arm64_freethreadingno.yaml
new file mode 100644
index 000000000..0ce25317d
--- /dev/null
+++ b/.ci_support/win_arm64_freethreadingno.yaml
@@ -0,0 +1,43 @@
+build_type:
+- release
+bzip2:
+- '1'
+c_compiler:
+- vs2022
+c_stdlib:
+- vs
+channel_sources:
+- conda-forge/label/python_rc,conda-forge
+channel_targets:
+- conda-forge main
+cxx_compiler:
+- vs2022
+expat:
+- '2'
+freethreading:
+- 'no'
+libffi:
+- '3.5'
+liblzma_devel:
+- '5'
+libsqlite:
+- '3'
+openssl:
+- '3.5'
+pin_run_as_build:
+  python:
+    min_pin: x.x
+    max_pin: x.x
+python:
+- '3.14'
+target_platform:
+- win-arm64
+tk:
+- '8.6'
+zip_keys:
+- - build_type
+  - channel_targets
+zlib:
+- '1'
+zstd:
+- '1.5'
diff --git a/.ci_support/win_arm64_freethreadingyes.yaml b/.ci_support/win_arm64_freethreadingyes.yaml
new file mode 100644
index 000000000..e82aad0ae
--- /dev/null
+++ b/.ci_support/win_arm64_freethreadingyes.yaml
@@ -0,0 +1,43 @@
+build_type:
+- release
+bzip2:
+- '1'
+c_compiler:
+- vs2022
+c_stdlib:
+- vs
+channel_sources:
+- conda-forge/label/python_rc,conda-forge
+channel_targets:
+- conda-forge main
+cxx_compiler:
+- vs2022
+expat:
+- '2'
+freethreading:
+- 'yes'
+libffi:
+- '3.5'
+liblzma_devel:
+- '5'
+libsqlite:
+- '3'
+openssl:
+- '3.5'
+pin_run_as_build:
+  python:
+    min_pin: x.x
+    max_pin: x.x
+python:
+- '3.14'
+target_platform:
+- win-arm64
+tk:
+- '8.6'
+zip_keys:
+- - build_type
+  - channel_targets
+zlib:
+- '1'
+zstd:
+- '1.5'
diff --git a/.scripts/run_osx_build.sh b/.scripts/run_osx_build.sh
index 361edeb2c..bac7141a9 100755
--- a/.scripts/run_osx_build.sh
+++ b/.scripts/run_osx_build.sh
@@ -63,6 +63,25 @@ if [[ "${sha:-}" == "" ]]; then
   sha=$(git rev-parse HEAD)
 fi
 
+if [[ "${OSX_SDK_DIR:-}" == "" ]]; then
+  if [[ "${CI:-}" == "" ]]; then
+    echo "Please set OSX_SDK_DIR to a directory where SDKs can be downloaded to. Aborting"
+    exit 1
+  else
+    export OSX_SDK_DIR=/opt/conda-sdks
+    /usr/bin/sudo mkdir -p "${OSX_SDK_DIR}"
+    /usr/bin/sudo chown "${USER}" "${OSX_SDK_DIR}"
+  fi
+else
+  if tmpf=$(mktemp -p "$OSX_SDK_DIR" tmp.XXXXXXXX 2>/dev/null); then
+      rm -f "$tmpf"
+      echo "OSX_SDK_DIR is writeable without sudo, continuing"
+  else
+      echo "User-provided OSX_SDK_DIR is not writeable for current user! Aborting"
+      exit 1
+  fi
+fi
+
 echo -e "\n\nRunning the build setup script."
 source run_conda_forge_build_setup
 
diff --git a/README.md b/README.md
index 78eed68b8..84b4babd1 100644
--- a/README.md
+++ b/README.md
@@ -212,6 +212,20 @@ Current build status
                   <img src="https://dev.azure.com/conda-forge/feedstock-builds/_apis/build/status/python-feedstock?branchName=main&jobName=win&configuration=win%20win_64_freethreadingyes" alt="variant">
                 </a>
               </td>
+            </tr><tr>
+              <td>win_arm64_freethreadingno</td>
+              <td>
+                <a href="https://dev.azure.com/conda-forge/feedstock-builds/_build/latest?definitionId=4155&branchName=main">
+                  <img src="https://dev.azure.com/conda-forge/feedstock-builds/_apis/build/status/python-feedstock?branchName=main&jobName=win&configuration=win%20win_arm64_freethreadingno" alt="variant">
+                </a>
+              </td>
+            </tr><tr>
+              <td>win_arm64_freethreadingyes</td>
+              <td>
+                <a href="https://dev.azure.com/conda-forge/feedstock-builds/_build/latest?definitionId=4155&branchName=main">
+                  <img src="https://dev.azure.com/conda-forge/feedstock-builds/_apis/build/status/python-feedstock?branchName=main&jobName=win&configuration=win%20win_arm64_freethreadingyes" alt="variant">
+                </a>
+              </td>
             </tr>
           </tbody>
         </table>
diff --git a/conda-forge.yml b/conda-forge.yml
index a16962d89..ab94597ad 100644
--- a/conda-forge.yml
+++ b/conda-forge.yml
@@ -9,6 +9,7 @@ build_platform:
   linux_aarch64: linux_64
   linux_ppc64le: linux_64
   osx_arm64: osx_64
+  win_arm64: win_64
 conda_build:
   pkg_format: '2'
 conda_forge_output_validation: true
diff --git a/recipe/build_base.bat b/recipe/build_base.bat
index 59471bcac..b0f1bc800 100644
--- a/recipe/build_base.bat
+++ b/recipe/build_base.bat
@@ -2,14 +2,30 @@ setlocal EnableDelayedExpansion
 echo on
 
 :: Compile python, extensions and external libraries
-if "%ARCH%"=="64" (
-   set PLATFORM=x64
-   set VC_PATH=x64
-   set BUILD_PATH=amd64
-) else (
-   set PLATFORM=Win32
-   set VC_PATH=x86
-   set BUILD_PATH=win32
+if "%target_platform%"=="win-64" (
+   set HOST_PLATFORM=x64
+   set HOST_DIR=amd64
+)
+if "%target_platform%"=="win-32" (
+   set HOST_PLATFORM=Win32
+   set HOST_DIR=win32
+)
+if "%target_platform%"=="win-arm64" (
+   set HOST_PLATFORM=ARM64
+   set HOST_DIR=arm64
+)
+
+if "%build_platform%"=="win-64" (
+   set BUILD_PLATFORM=x64
+   set BUILD_DIR=amd64
+)
+if "%build_platform%"=="win-32" (
+   set BUILD_PLATFORM=Win32
+   set BUILD_DIR=win32
+)
+if "%build_platform%"=="win-arm64" (
+   set BUILD_PLATFORM=ARM64
+   set BUILD_DIR=arm64
 )
 
 for /F "tokens=1,2 delims=." %%i in ("%PKG_VERSION%") do (
@@ -61,25 +77,25 @@ cd PCbuild
 
 :: Twice because:
 :: error : importlib_zipimport.h updated. You will need to rebuild pythoncore to see the changes.
-call build.bat %PGO% %CONFIG% %FREETHREADING% -m -e -v -p %PLATFORM%
-call build.bat %PGO% %CONFIG% %FREETHREADING% -m -e -v -p %PLATFORM%
+call build.bat %PGO% %CONFIG% %FREETHREADING% -m -e -v -p %HOST_PLATFORM%
+call build.bat %PGO% %CONFIG% %FREETHREADING% -m -e -v -p %HOST_PLATFORM%
 if errorlevel 1 exit 1
 cd ..
 
 :: Populate the root package directory
 for %%x in (python%VERNODOTS%%THREAD%%_D%.dll python3%THREAD%%_D%.dll python%EXE_T%%_D%.exe pythonw%EXE_T%%_D%.exe) do (
-  if exist %SRC_DIR%\PCbuild\%BUILD_PATH%\%%x (
-    copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\%%x %PREFIX%
+  if exist %SRC_DIR%\PCbuild\%HOST_DIR%\%%x (
+    copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\%%x %PREFIX%
   ) else (
-    echo "WARNING :: %SRC_DIR%\PCbuild\%BUILD_PATH%\%%x does not exist"
+    echo "WARNING :: %SRC_DIR%\PCbuild\%HOST_DIR%\%%x does not exist"
   )
 )
 
 for %%x in (python%THREAD%%_D%.pdb python%VERNODOTS%%THREAD%%_D%.pdb pythonw%THREAD%%_D%.pdb) do (
-  if exist %SRC_DIR%\PCbuild\%BUILD_PATH%\%%x (
-    copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\%%x %PREFIX%
+  if exist %SRC_DIR%\PCbuild\%HOST_DIR%\%%x (
+    copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\%%x %PREFIX%
   ) else (
-    echo "WARNING :: %SRC_DIR%\PCbuild\%BUILD_PATH%\%%x does not exist"
+    echo "WARNING :: %SRC_DIR%\PCbuild\%HOST_DIR%\%%x does not exist"
   )
 )
 
@@ -90,7 +106,7 @@ if errorlevel 1 exit 1
 
 :: Populate the DLLs directory
 mkdir %PREFIX%\DLLs
-xcopy /s /y %SRC_DIR%\PCBuild\%BUILD_PATH%\*.pyd %PREFIX%\DLLs\
+xcopy /s /y %SRC_DIR%\PCBuild\%HOST_DIR%\*.pyd %PREFIX%\DLLs\
 if errorlevel 1 exit 1
 
 copy /Y %SRC_DIR%\PC\icons\py.ico %PREFIX%\DLLs\
@@ -132,12 +148,12 @@ for %%x in (idle pydoc) do (
 
 :: Populate the libs directory
 if not exist %PREFIX%\libs mkdir %PREFIX%\libs
-dir %SRC_DIR%\PCbuild\%BUILD_PATH%\
-if exist %SRC_DIR%\PCbuild\%BUILD_PATH%\python%VERNODOTS%%THREAD%%_D%.lib copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\python%VERNODOTS%%THREAD%%_D%.lib %PREFIX%\libs\
+dir %SRC_DIR%\PCbuild\%HOST_DIR%\
+if exist %SRC_DIR%\PCbuild\%HOST_DIR%\python%VERNODOTS%%THREAD%%_D%.lib copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\python%VERNODOTS%%THREAD%%_D%.lib %PREFIX%\libs\
 if errorlevel 1 exit 1
-if exist %SRC_DIR%\PCbuild\%BUILD_PATH%\python3%THREAD%%_D%.lib copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\python3%THREAD%%_D%.lib %PREFIX%\libs\
+if exist %SRC_DIR%\PCbuild\%HOST_DIR%\python3%THREAD%%_D%.lib copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\python3%THREAD%%_D%.lib %PREFIX%\libs\
 if errorlevel 1 exit 1
-if exist %SRC_DIR%\PCbuild\%BUILD_PATH%\_tkinter%THREAD%%_D%.lib copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\_tkinter%THREAD%%_D%.lib %PREFIX%\libs\
+if exist %SRC_DIR%\PCbuild\%HOST_DIR%\_tkinter%THREAD%%_D%.lib copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\_tkinter%THREAD%%_D%.lib %PREFIX%\libs\
 if errorlevel 1 exit 1
 
 
@@ -148,20 +164,20 @@ if errorlevel 1 exit 1
 
 :: Copy venv[w]launcher scripts to venv\srcipts\nt
 :: See https://github.com/python/cpython/blob/b4a316087c32d83e375087fd35fc511bc430ee8b/Lib/venv/__init__.py#L334-L376
-if exist %SRC_DIR%\PCbuild\%BUILD_PATH%\venvlauncher%THREAD%%_D%.exe (
+if exist %SRC_DIR%\PCbuild\%HOST_DIR%\venvlauncher%THREAD%%_D%.exe (
   @rem We did copy pythonw.exe until 3.12 but starting with 3.13 we seem to need the latter. Should we omit the first?
-  copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\venvlauncher%THREAD%%_D%.exe %PREFIX%\Lib\venv\scripts\nt\python.exe
-  copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\venvlauncher%THREAD%%_D%.exe %PREFIX%\Lib\venv\scripts\nt\venvlauncher%THREAD%%_D%.exe
+  copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\venvlauncher%THREAD%%_D%.exe %PREFIX%\Lib\venv\scripts\nt\python.exe
+  copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\venvlauncher%THREAD%%_D%.exe %PREFIX%\Lib\venv\scripts\nt\venvlauncher%THREAD%%_D%.exe
 ) else (
-  echo "WARNING :: %SRC_DIR%\PCbuild\%BUILD_PATH%\venvlauncher%THREAD%%_D%.exe does not exist"
+  echo "WARNING :: %SRC_DIR%\PCbuild\%HOST_DIR%\venvlauncher%THREAD%%_D%.exe does not exist"
 )
 
-if exist %SRC_DIR%\PCbuild\%BUILD_PATH%\venvwlauncher%THREAD%%_D%.exe (
+if exist %SRC_DIR%\PCbuild\%HOST_DIR%\venvwlauncher%THREAD%%_D%.exe (
   @rem We did copy pythonw.exe until 3.12 but starting with 3.13 we seem to need the latter. Should we omit the first?
-  copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\venvwlauncher%THREAD%%_D%.exe %PREFIX%\Lib\venv\scripts\nt\pythonw.exe
-  copy /Y %SRC_DIR%\PCbuild\%BUILD_PATH%\venvwlauncher%THREAD%%_D%.exe %PREFIX%\Lib\venv\scripts\nt\venvwlauncher%THREAD%%_D%.exe
+  copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\venvwlauncher%THREAD%%_D%.exe %PREFIX%\Lib\venv\scripts\nt\pythonw.exe
+  copy /Y %SRC_DIR%\PCbuild\%HOST_DIR%\venvwlauncher%THREAD%%_D%.exe %PREFIX%\Lib\venv\scripts\nt\venvwlauncher%THREAD%%_D%.exe
 ) else (
-  echo "WARNING :: %SRC_DIR%\PCbuild\%BUILD_PATH%\venvwlauncher%THREAD%%_D%.exe does not exist"
+  echo "WARNING :: %SRC_DIR%\PCbuild\%HOST_DIR%\venvwlauncher%THREAD%%_D%.exe does not exist"
 )
 
 :: Remove test data to save space.