diff --git a/neutronclient/common/exceptions.py b/neutronclient/common/exceptions.py
index f4085d319..65f1c26e4 100644
--- a/neutronclient/common/exceptions.py
+++ b/neutronclient/common/exceptions.py
@@ -139,6 +139,10 @@ class IpAddressInUseClient(Conflict):
     pass
 
 
+class OverQuotaClient(Conflict):
+    pass
+
+
 # TODO(amotoki): It is unused in Neutron, but it is referred to
 # in Horizon code. After Horizon code is updated, remove it.
 class AlreadyAttachedClient(Conflict):
diff --git a/neutronclient/tests/unit/test_cli20.py b/neutronclient/tests/unit/test_cli20.py
index 51ff0bf00..e49605d3e 100644
--- a/neutronclient/tests/unit/test_cli20.py
+++ b/neutronclient/tests/unit/test_cli20.py
@@ -591,6 +591,7 @@ class CLITestV20ExceptionHandler(CLITestV20Base):
              exceptions.IpAddressGenerationFailureClient, 409),
             ('ExternalIpAddressExhausted',
              exceptions.ExternalIpAddressExhaustedClient, 400),
+            ('OverQuota', exceptions.OverQuotaClient, 409),
         ]
 
         error_msg = 'dummy exception message'