diff --git a/Mac/IDLE/IDLE.app/Contents/Info.plist b/Mac/IDLE/IDLE.app/Contents/Info.plist
index fea06d46324999..20b97b67f41d1a 100644
--- a/Mac/IDLE/IDLE.app/Contents/Info.plist
+++ b/Mac/IDLE/IDLE.app/Contents/Info.plist
@@ -56,5 +56,7 @@
 	<string>%version%</string>
 	<key>NSHighResolutionCapable</key>
 	<true/>
+	<key>CFBundleAllowMixedLocalizations</key>
+	<true/>
 </dict>
 </plist>
diff --git a/Mac/Resources/app/Info.plist.in b/Mac/Resources/app/Info.plist.in
index 4ec828ff176e7b..8362b19b361b62 100644
--- a/Mac/Resources/app/Info.plist.in
+++ b/Mac/Resources/app/Info.plist.in
@@ -58,5 +58,7 @@
 	<string>(c) 2001-2023 Python Software Foundation.</string>
 	<key>NSHighResolutionCapable</key>
 	<true/>
+	<key>CFBundleAllowMixedLocalizations</key>
+	<true/>
 </dict>
 </plist>
diff --git a/Mac/Resources/framework/Info.plist.in b/Mac/Resources/framework/Info.plist.in
index e131c205ef0b28..238441ce2c76c7 100644
--- a/Mac/Resources/framework/Info.plist.in
+++ b/Mac/Resources/framework/Info.plist.in
@@ -24,5 +24,7 @@
 	<string>????</string>
 	<key>CFBundleVersion</key>
 	<string>%VERSION%</string>
+	<key>CFBundleAllowMixedLocalizations</key>
+	<true/>
 </dict>
 </plist>
diff --git a/Misc/NEWS.d/next/macOS/2023-12-16-11-45-32.gh-issue-108269.wVgCHF.rst b/Misc/NEWS.d/next/macOS/2023-12-16-11-45-32.gh-issue-108269.wVgCHF.rst
new file mode 100644
index 00000000000000..85598454abcaad
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2023-12-16-11-45-32.gh-issue-108269.wVgCHF.rst
@@ -0,0 +1,4 @@
+Set ``CFBundleAllowMixedLocalizations`` to true in the Info.plist for the
+framework, embedded Python.app and IDLE.app with framework installs on
+macOS.  This allows applications to pick up the user's preferred locale when
+that's different from english.