diff --git a/Lib/shutil.py b/Lib/shutil.py
index 273a7d2f43..124116e2fb 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -10,6 +10,7 @@
 import fnmatch
 import collections
 import errno
+import warnings
 
 try:
     import zlib
@@ -1306,6 +1307,10 @@ def chown(path, user=None, group=None):
     user and group can be the uid/gid or the user/group names, and in that case,
     they are converted to their respective uid/gid.
     """
+    if os.name == 'nt':
+        warnings.warn('shutil.chown is not supported on Windows platforms. '
+                       'It will become undefined on these platforms in future '
+                       'versions of Python.', DeprecationWarning)
     sys.audit('shutil.chown', path, user, group)
 
     if user is None and group is None: