diff --git a/docs/platforms.rst b/docs/platforms.rst
index b13caaa..0ba5fcb 100644
--- a/docs/platforms.rst
+++ b/docs/platforms.rst
@@ -318,12 +318,12 @@ Environment variable overrides
 
 Unlike Linux/macOS where ``XDG_*`` variables are a platform standard, Windows has no built-in
 convention for overriding folder locations at the application level. To fill this gap,
-``platformdirs`` checks ``PLATFORMDIRS_*`` environment variables before querying the Shell Folder
-APIs. This is useful when large data (ML models, package caches) should live on a different drive
-without changing the system-wide ``APPDATA`` / ``LOCALAPPDATA`` variables that other applications
-rely on.
+``platformdirs`` checks ``WIN_PD_OVERRIDE_*`` environment variables before querying the Shell
+Folder APIs. This is useful when large data (ML models, package caches) should live on a different
+drive without changing the system-wide ``APPDATA`` / ``LOCALAPPDATA`` variables that other
+applications rely on.
 
-The override variable name is ``PLATFORMDIRS_`` followed by the CSIDL suffix:
+The override variable name is ``WIN_PD_OVERRIDE_`` followed by the CSIDL suffix:
 
 .. list-table::
    :widths: 40 60
@@ -331,23 +331,23 @@ The override variable name is ``PLATFORMDIRS_`` followed by the CSIDL suffix:
 
    * - Environment variable
      - Overrides
-   * - ``PLATFORMDIRS_APPDATA``
+   * - ``WIN_PD_OVERRIDE_APPDATA``
      - Roaming user data (``AppData\Roaming``)
-   * - ``PLATFORMDIRS_LOCAL_APPDATA``
+   * - ``WIN_PD_OVERRIDE_LOCAL_APPDATA``
      - Local user data, config, cache, state (``AppData\Local``)
-   * - ``PLATFORMDIRS_COMMON_APPDATA``
+   * - ``WIN_PD_OVERRIDE_COMMON_APPDATA``
      - Site-wide data, config, cache, state (``ProgramData``)
-   * - ``PLATFORMDIRS_PERSONAL``
+   * - ``WIN_PD_OVERRIDE_PERSONAL``
      - Documents
-   * - ``PLATFORMDIRS_DOWNLOADS``
+   * - ``WIN_PD_OVERRIDE_DOWNLOADS``
      - Downloads
-   * - ``PLATFORMDIRS_MYPICTURES``
+   * - ``WIN_PD_OVERRIDE_MYPICTURES``
      - Pictures
-   * - ``PLATFORMDIRS_MYVIDEO``
+   * - ``WIN_PD_OVERRIDE_MYVIDEO``
      - Videos
-   * - ``PLATFORMDIRS_MYMUSIC``
+   * - ``WIN_PD_OVERRIDE_MYMUSIC``
      - Music
-   * - ``PLATFORMDIRS_DESKTOPDIRECTORY``
+   * - ``WIN_PD_OVERRIDE_DESKTOPDIRECTORY``
      - Desktop
 
 Example — redirect cache to a separate drive:
@@ -355,7 +355,7 @@ Example — redirect cache to a separate drive:
 .. code-block:: python
 
    import os
-   os.environ["PLATFORMDIRS_LOCAL_APPDATA"] = r"X:\appdata"
+   os.environ["WIN_PD_OVERRIDE_LOCAL_APPDATA"] = r"X:\appdata"
 
    import platformdirs
    print(platformdirs.user_cache_dir("MyApp", "Acme"))
diff --git a/src/platformdirs/windows.py b/src/platformdirs/windows.py
index 675b665..ff2b729 100644
--- a/src/platformdirs/windows.py
+++ b/src/platformdirs/windows.py
@@ -324,12 +324,12 @@ def _pick_get_win_folder() -> Callable[[str], str]:
 
 def get_win_folder(csidl_name: str) -> str:
     """
-    Get a Windows folder path, checking for ``PLATFORMDIRS_*`` environment variable overrides first.
+    Get a Windows folder path, checking for ``WIN_PD_OVERRIDE_*`` environment variable overrides first.
 
-    For example, ``CSIDL_LOCAL_APPDATA`` can be overridden by setting ``PLATFORMDIRS_LOCAL_APPDATA``.
+    For example, ``CSIDL_LOCAL_APPDATA`` can be overridden by setting ``WIN_PD_OVERRIDE_LOCAL_APPDATA``.
 
     """
-    env_var = f"PLATFORMDIRS_{csidl_name.removeprefix('CSIDL_')}"
+    env_var = f"WIN_PD_OVERRIDE_{csidl_name.removeprefix('CSIDL_')}"
     if override := os.environ.get(env_var, "").strip():
         return override
     return _resolve_win_folder(csidl_name)
diff --git a/tests/test_windows.py b/tests/test_windows.py
index fb13d2b..3c39c85 100644
--- a/tests/test_windows.py
+++ b/tests/test_windows.py
@@ -318,23 +318,23 @@ def test_pick_get_win_folder_ctypes(mocker: MockerFixture) -> None:
 def test_get_win_folder_override(monkeypatch: pytest.MonkeyPatch, csidl_name: str, env_suffix: str) -> None:
     override_path = r"X:\custom\override"
     monkeypatch.setattr("platformdirs.windows._resolve_win_folder", lambda _csidl: _WIN_FOLDERS[_csidl])
-    monkeypatch.setenv(f"PLATFORMDIRS_{env_suffix}", override_path)
+    monkeypatch.setenv(f"WIN_PD_OVERRIDE_{env_suffix}", override_path)
     assert get_win_folder(csidl_name) == override_path
 
 
 def test_get_win_folder_override_whitespace_only_ignored(monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr("platformdirs.windows._resolve_win_folder", lambda csidl: _WIN_FOLDERS[csidl])
-    monkeypatch.setenv("PLATFORMDIRS_LOCAL_APPDATA", "   ")
+    monkeypatch.setenv("WIN_PD_OVERRIDE_LOCAL_APPDATA", "   ")
     assert get_win_folder("CSIDL_LOCAL_APPDATA") == _WIN_FOLDERS["CSIDL_LOCAL_APPDATA"]
 
 
 def test_get_win_folder_override_not_set_falls_back(monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr("platformdirs.windows._resolve_win_folder", lambda csidl: _WIN_FOLDERS[csidl])
-    monkeypatch.delenv("PLATFORMDIRS_LOCAL_APPDATA", raising=False)
+    monkeypatch.delenv("WIN_PD_OVERRIDE_LOCAL_APPDATA", raising=False)
     assert get_win_folder("CSIDL_LOCAL_APPDATA") == _WIN_FOLDERS["CSIDL_LOCAL_APPDATA"]
 
 
 def test_get_win_folder_override_strips_whitespace(monkeypatch: pytest.MonkeyPatch) -> None:
     monkeypatch.setattr("platformdirs.windows._resolve_win_folder", lambda csidl: _WIN_FOLDERS[csidl])
-    monkeypatch.setenv("PLATFORMDIRS_LOCAL_APPDATA", "  X:\\custom  ")
+    monkeypatch.setenv("WIN_PD_OVERRIDE_LOCAL_APPDATA", "  X:\\custom  ")
     assert get_win_folder("CSIDL_LOCAL_APPDATA") == r"X:\custom"