diff --git a/Lib/inspect.py b/Lib/inspect.py
index f0b72662a9a0b2..db37cee6d04234 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -909,6 +909,9 @@ def getfile(object):
     if ismodule(object):
         if getattr(object, '__file__', None):
             return object.__file__
+        if getattr(object, '__path__', None):
+            # Implicit namespace package. See PEP 420.
+            return object.__path__[0]
         raise TypeError('{!r} is a built-in module'.format(object))
     if isclass(object):
         if hasattr(object, '__module__'):
diff --git a/Lib/test/test_inspect/test_inspect.py b/Lib/test/test_inspect/test_inspect.py
index 09d50859970c99..f014ad57f8ada9 100644
--- a/Lib/test/test_inspect/test_inspect.py
+++ b/Lib/test/test_inspect/test_inspect.py
@@ -740,6 +740,10 @@ def __repr__(self):
         with self.assertRaises(TypeError):
             inspect.getfile(er)
 
+    def test_getfile_implicit_namespace_package(self):
+        import test.test_importlib.namespace_pkgs.not_a_namespace_pkg as pkg
+        self.assertEqual(inspect.getfile(pkg), pkg.__path__[0])
+
     def test_getmodule_recursion(self):
         from types import ModuleType
         name = '__inspect_dummy'
diff --git a/Misc/NEWS.d/next/Library/2022-05-11-17-53-59.gh-issue-92525.YkK50p.rst b/Misc/NEWS.d/next/Library/2022-05-11-17-53-59.gh-issue-92525.YkK50p.rst
new file mode 100644
index 00000000000000..b13f87ed816d15
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-05-11-17-53-59.gh-issue-92525.YkK50p.rst
@@ -0,0 +1 @@
+Make ``inspect.getfile`` understand PEP 420 implicit namespace packages