diff -r bfff89ed356b Lib/logging/__init__.py
--- a/Lib/logging/__init__.py	Thu Sep 01 22:10:09 2016 -0400
+++ b/Lib/logging/__init__.py	Fri Sep 02 16:30:29 2016 +0800
@@ -108,6 +108,7 @@
 }
 _nameToLevel = {
     'CRITICAL': CRITICAL,
+    'FATAL': CRITICAL,
     'ERROR': ERROR,
     'WARN': WARNING,
     'WARNING': WARNING,
diff -r bfff89ed356b Lib/test/test_logging.py
--- a/Lib/test/test_logging.py	Thu Sep 01 22:10:09 2016 -0400
+++ b/Lib/test/test_logging.py	Fri Sep 02 16:30:29 2016 +0800
@@ -305,10 +305,15 @@
         ])
 
     def test_regression_22386(self):
-        """See issue #22386 for more information."""
+        # See issue #22386 for more information.
         self.assertEqual(logging.getLevelName('INFO'), logging.INFO)
         self.assertEqual(logging.getLevelName(logging.INFO), 'INFO')
 
+    def test_issue27935(self):
+        fatal = logging.getLevelName('FATAL')
+        self.assertIsInstance(fatal, int)
+        self.assertEqual(fatal, logging.FATAL)
+
 class BasicFilterTest(BaseTest):
 
     """Test the bundled Filter class."""