diff --git a/django/test/utils.py b/django/test/utils.py
index c1bfc87fc0..e977db8a10 100644
--- a/django/test/utils.py
+++ b/django/test/utils.py
@@ -235,9 +235,13 @@ def setup_databases(
     return old_names
 
 
-def iter_test_cases(suite):
-    """Return an iterator over a test suite's unittest.TestCase objects."""
-    for test in suite:
+def iter_test_cases(tests):
+    """
+    Return an iterator over a test suite's unittest.TestCase objects.
+
+    The tests argument can also be an iterable of TestCase objects.
+    """
+    for test in tests:
         if isinstance(test, TestCase):
             yield test
         else:
diff --git a/tests/test_runner/tests.py b/tests/test_runner/tests.py
index 27a03fdda0..ec84ba31b7 100644
--- a/tests/test_runner/tests.py
+++ b/tests/test_runner/tests.py
@@ -89,6 +89,20 @@ class TestSuiteTests(unittest.TestCase):
             'Tests1.test1', 'Tests1.test2', 'Tests2.test1', 'Tests2.test2',
         ])
 
+    def test_iter_test_cases_iterable_of_tests(self):
+        class Tests(unittest.TestCase):
+            def test1(self):
+                pass
+
+            def test2(self):
+                pass
+
+        tests = list(unittest.defaultTestLoader.loadTestsFromTestCase(Tests))
+        actual_tests = iter_test_cases(tests)
+        self.assertTestNames(actual_tests, expected=[
+            'Tests.test1', 'Tests.test2',
+        ])
+
     def test_iter_test_cases_custom_test_suite_class(self):
         suite = self.make_test_suite(suite_class=MySuite)
         tests = iter_test_cases(suite)