diff --git a/Lib/multiprocessing/connection.py b/Lib/multiprocessing/connection.py
index df00f1d..fa6f7b3 100644
--- a/Lib/multiprocessing/connection.py
+++ b/Lib/multiprocessing/connection.py
@@ -94,6 +94,13 @@
     else:
         raise ValueError('unrecognized family')
 
+def _validate_family(family):
+    '''
+    Checks if the family is valid for the current environment.
+    '''
+    if sys.platform != 'win32' and family == 'AF_PIPE':
+        raise ValueError('Family %s is not recognized.' % family)
+
 
 def address_type(address):
     '''
@@ -126,6 +133,7 @@
                  or default_family
         address = address or arbitrary_address(family)
 
+        _validate_family(family)
         if family == 'AF_PIPE':
             self._listener = PipeListener(address, backlog)
         else:
@@ -163,6 +171,7 @@
     Returns a connection to the address of a `Listener`
     '''
     family = family or address_type(address)
+    _validate_family(family)
     if family == 'AF_PIPE':
         c = PipeClient(address)
     else:
diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
index 8edb420..8de7a8d 100644
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -2319,8 +2319,20 @@
         flike.flush()
         assert sio.getvalue() == 'foo'
 
+
+#
+# Issue 14151: Test invalid family on invalid environment
+#
+
+class TestInvalidFamily(unittest.TestCase):
+
+    @unittest.skipIf(WIN32, "skipped on Windows")
+    def test_invalid_family(self):
+        with self.assertRaises(ValueError):
+            multiprocessing.connection.Listener(r'\\.\test')
+
 testcases_other = [OtherTest, TestInvalidHandle, TestInitializers,
-                   TestStdinBadfiledescriptor]
+                   TestStdinBadfiledescriptor, TestInvalidFamily]
 
 #
 #
diff --git a/Misc/NEWS b/Misc/NEWS
index 4bf3a91..2fa911e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -34,6 +34,10 @@
 Library
 -------
 
+- Issue #14151: Raise a ValueError, not a NameError, when trying to create
+  a multiprocessing Client or Listener with an AF_PIPE type address under
+  non-Windows platforms.  Patch by Popa Claudiu.
+
 - Issue #13872: socket.detach() now marks the socket closed (as mirrored
   in the socket repr()).  Patch by Matt Joiner.