diff --git a/Doc/library/gettext.rst b/Doc/library/gettext.rst
index d0de83907eb297..64f9f3bdb62854 100644
--- a/Doc/library/gettext.rst
+++ b/Doc/library/gettext.rst
@@ -380,6 +380,25 @@ unexpected, or if other problems occur while reading the file, instantiating a
       .. versionadded:: 3.8
 
 
+Utility functions
+^^^^^^^^^^^^^^^^^
+
+.. function:: c2py(plural)
+
+   Convert a :file:`.po` file plural rule to a Python function.
+   The returned function takes a single integer argument and returns the
+   corresponding plural index in the message catalog. See
+   `the GNU gettext documentation <https://www.gnu.org/software/gettext/manual/html_node/Plural-forms.html>`__
+   for more details about plural rules.
+
+   Example usage::
+
+      >>> plural_fn = c2py('n == 1 ? 0 : 1')
+      >>> plural_fn(1)
+      0
+      >>> plural_fn(5)
+      1
+
 Solaris message catalog support
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/Lib/gettext.py b/Lib/gettext.py
index a0d81cf846a05c..46d06f7597bc70 100644
--- a/Lib/gettext.py
+++ b/Lib/gettext.py
@@ -56,8 +56,7 @@
            'bindtextdomain', 'find', 'translation', 'install',
            'textdomain', 'dgettext', 'dngettext', 'gettext',
            'ngettext', 'pgettext', 'dpgettext', 'npgettext',
-           'dnpgettext'
-           ]
+           'dnpgettext', 'c2py']
 
 _default_localedir = os.path.join(sys.base_prefix, 'share', 'locale')
 
diff --git a/Misc/NEWS.d/next/Documentation/2024-11-28-19-31-15.gh-issue-127373.tbXdH9.rst b/Misc/NEWS.d/next/Documentation/2024-11-28-19-31-15.gh-issue-127373.tbXdH9.rst
new file mode 100644
index 00000000000000..4eebf0115a6c05
--- /dev/null
+++ b/Misc/NEWS.d/next/Documentation/2024-11-28-19-31-15.gh-issue-127373.tbXdH9.rst
@@ -0,0 +1 @@
+Document :func:`gettext.c2py`.