diff --git a/quantum/common/test_lib.py b/quantum/common/test_lib.py
index 4e4fab730..8e8fc67f4 100644
--- a/quantum/common/test_lib.py
+++ b/quantum/common/test_lib.py
@@ -38,11 +38,9 @@
 #    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 import logging
-import os
 import sys
 import unittest
 
-from nose import config
 from nose import core
 from nose import result
 
diff --git a/quantum/extensions/multiport.py b/quantum/extensions/multiport.py
index 039d5465b..6cffc04f5 100644
--- a/quantum/extensions/multiport.py
+++ b/quantum/extensions/multiport.py
@@ -24,7 +24,6 @@ from quantum.api import api_common as common
 from quantum.api.views import ports as port_view
 from quantum.extensions import extensions
 from quantum.manager import QuantumManager
-from quantum.plugins.cisco.common import cisco_exceptions as exception
 from quantum.plugins.cisco.common import cisco_faults as faults
 from quantum import wsgi
 
diff --git a/quantum/plugins/cisco/client/cli.py b/quantum/plugins/cisco/client/cli.py
index cd6f7842b..35cc22279 100644
--- a/quantum/plugins/cisco/client/cli.py
+++ b/quantum/plugins/cisco/client/cli.py
@@ -29,9 +29,7 @@ import logging.handlers
 from optparse import OptionParser
 import os
 import sys
-import subprocess
 
-from quantum.plugins.cisco.common import cisco_constants as const
 from quantumclient import Client
 import quantumclient.cli as qcli
 
diff --git a/quantum/plugins/cisco/common/cisco_configparser.py b/quantum/plugins/cisco/common/cisco_configparser.py
index 2d8de9ce5..bfbc2bd6c 100644
--- a/quantum/plugins/cisco/common/cisco_configparser.py
+++ b/quantum/plugins/cisco/common/cisco_configparser.py
@@ -18,8 +18,6 @@
 
 from configobj import ConfigObj
 
-from quantum.plugins.cisco.common import cisco_constants as const
-
 
 class CiscoConfigParser(ConfigObj):
     """Config Parser based on the ConfigObj module"""
diff --git a/quantum/plugins/cisco/common/cisco_credentials.py b/quantum/plugins/cisco/common/cisco_credentials.py
index 71c09ce0e..7c6302ae6 100644
--- a/quantum/plugins/cisco/common/cisco_credentials.py
+++ b/quantum/plugins/cisco/common/cisco_credentials.py
@@ -16,7 +16,6 @@
 #
 # @author: Sumit Naiksatam, Cisco Systems, Inc.
 
-import os
 import logging as LOG
 
 from quantum.common.config import find_config_file
diff --git a/quantum/plugins/cisco/common/cisco_utils.py b/quantum/plugins/cisco/common/cisco_utils.py
index 32a73a91a..1a28be885 100644
--- a/quantum/plugins/cisco/common/cisco_utils.py
+++ b/quantum/plugins/cisco/common/cisco_utils.py
@@ -18,12 +18,8 @@
 
 import hashlib
 import logging
-import traceback
-
-import MySQLdb
 
 from quantum.plugins.cisco.common import cisco_constants as const
-from quantum.plugins.cisco.db import api as db
 from quantum.plugins.cisco.db import l2network_db as cdb
 
 
diff --git a/quantum/plugins/cisco/db/l2network_db.py b/quantum/plugins/cisco/db/l2network_db.py
index f04896462..5e7a85c8f 100644
--- a/quantum/plugins/cisco/db/l2network_db.py
+++ b/quantum/plugins/cisco/db/l2network_db.py
@@ -24,9 +24,6 @@ from quantum.plugins.cisco.db import l2network_models
 
 import logging as LOG
 import quantum.plugins.cisco.db.api as db
-import quantum.plugins.cisco.db.nexus_db as ndb
-import quantum.plugins.cisco.db.ucs_db as udb
-import quantum.plugins.cisco.db.services_db as sdb
 
 
 def initialize():
diff --git a/quantum/plugins/cisco/db/services_db.py b/quantum/plugins/cisco/db/services_db.py
index 7c5a92247..ca9eef625 100644
--- a/quantum/plugins/cisco/db/services_db.py
+++ b/quantum/plugins/cisco/db/services_db.py
@@ -22,7 +22,6 @@ from sqlalchemy.orm import exc
 
 import quantum.plugins.cisco.db.api as db
 
-from quantum.plugins.cisco.common import cisco_exceptions as c_exc
 from quantum.plugins.cisco.db import services_models
 
 
diff --git a/quantum/plugins/cisco/l2network_plugin.py b/quantum/plugins/cisco/l2network_plugin.py
index deb58ee0f..1edecab81 100644
--- a/quantum/plugins/cisco/l2network_plugin.py
+++ b/quantum/plugins/cisco/l2network_plugin.py
@@ -18,7 +18,6 @@
 
 import inspect
 import logging
-import re
 
 from quantum.common import exceptions as exc
 from quantum.openstack.common import importutils
diff --git a/quantum/plugins/cisco/l2network_plugin_configuration.py b/quantum/plugins/cisco/l2network_plugin_configuration.py
index f6a107f8e..59196156c 100644
--- a/quantum/plugins/cisco/l2network_plugin_configuration.py
+++ b/quantum/plugins/cisco/l2network_plugin_configuration.py
@@ -17,8 +17,6 @@
 # @author: Sumit Naiksatam, Cisco Systems, Inc.
 # @author: Rohit Agarwalla, Cisco Systems, Inc.
 
-import os
-
 from quantum.common.config import find_config_file
 from quantum.plugins.cisco.common import cisco_configparser as confp
 
diff --git a/quantum/plugins/cisco/models/l2network_multi_blade.py b/quantum/plugins/cisco/models/l2network_multi_blade.py
index f55888fcc..a19583b2a 100644
--- a/quantum/plugins/cisco/models/l2network_multi_blade.py
+++ b/quantum/plugins/cisco/models/l2network_multi_blade.py
@@ -19,14 +19,11 @@
 from copy import deepcopy
 import inspect
 import logging
-import platform
 
-from quantum.common import exceptions as exc
 from quantum.openstack.common import importutils
 from quantum.plugins.cisco.l2network_model_base import L2NetworkModelBase
 from quantum.plugins.cisco import l2network_plugin_configuration as conf
 from quantum.plugins.cisco.common import cisco_constants as const
-from quantum.plugins.cisco.common import cisco_exceptions as cexc
 
 
 LOG = logging.getLogger(__name__)
diff --git a/quantum/plugins/cisco/models/l2network_single_blade.py b/quantum/plugins/cisco/models/l2network_single_blade.py
index 61395d889..304f411ed 100644
--- a/quantum/plugins/cisco/models/l2network_single_blade.py
+++ b/quantum/plugins/cisco/models/l2network_single_blade.py
@@ -19,14 +19,11 @@
 from copy import deepcopy
 import inspect
 import logging
-import platform
 
-from quantum.common import exceptions as exc
 from quantum.openstack.common import importutils
 from quantum.plugins.cisco.l2network_model_base import L2NetworkModelBase
 from quantum.plugins.cisco import l2network_plugin_configuration as conf
 from quantum.plugins.cisco.common import cisco_constants as const
-from quantum.plugins.cisco.common import cisco_exceptions as cexc
 
 
 LOG = logging.getLogger(__name__)
diff --git a/quantum/plugins/cisco/nexus/cisco_nexus_configuration.py b/quantum/plugins/cisco/nexus/cisco_nexus_configuration.py
index 58b183ae8..449924ed2 100644
--- a/quantum/plugins/cisco/nexus/cisco_nexus_configuration.py
+++ b/quantum/plugins/cisco/nexus/cisco_nexus_configuration.py
@@ -22,7 +22,6 @@ Configuration consolidation for the Nexus Driver
 This module will export the configuration parameters
 from the nexus.ini file
 """
-import os
 
 from quantum.common.config import find_config_file
 from quantum.plugins.cisco.common import cisco_configparser as confp
diff --git a/quantum/plugins/cisco/nexus/cisco_nexus_network_driver.py b/quantum/plugins/cisco/nexus/cisco_nexus_network_driver.py
index a90441e3d..34e599d73 100644
--- a/quantum/plugins/cisco/nexus/cisco_nexus_network_driver.py
+++ b/quantum/plugins/cisco/nexus/cisco_nexus_network_driver.py
@@ -25,7 +25,6 @@ import logging
 
 from ncclient import manager
 
-from quantum.plugins.cisco.common import cisco_constants as const
 from quantum.plugins.cisco.db import l2network_db as cdb
 from quantum.plugins.cisco.nexus import cisco_nexus_snippets as snipp
 
diff --git a/quantum/plugins/cisco/nexus/cisco_nexus_snippets.py b/quantum/plugins/cisco/nexus/cisco_nexus_snippets.py
index 3606f8631..ad8217803 100644
--- a/quantum/plugins/cisco/nexus/cisco_nexus_snippets.py
+++ b/quantum/plugins/cisco/nexus/cisco_nexus_snippets.py
@@ -22,8 +22,6 @@ Nexus-OS XML-based configuration snippets
 
 import logging
 
-from quantum.plugins.cisco.common import cisco_constants as const
-
 
 LOG = logging.getLogger(__name__)
 
diff --git a/quantum/plugins/cisco/nova/quantum_port_aware_scheduler.py b/quantum/plugins/cisco/nova/quantum_port_aware_scheduler.py
index 7362ef38d..351191c61 100644
--- a/quantum/plugins/cisco/nova/quantum_port_aware_scheduler.py
+++ b/quantum/plugins/cisco/nova/quantum_port_aware_scheduler.py
@@ -27,7 +27,6 @@ from nova import flags
 from nova import log as logging
 from nova.openstack.common import cfg
 from nova.scheduler import chance
-from nova.scheduler import driver
 from quantumclient import Client
 
 
diff --git a/quantum/plugins/cisco/run_tests.py b/quantum/plugins/cisco/run_tests.py
index 84e1313a6..fa8c892db 100644
--- a/quantum/plugins/cisco/run_tests.py
+++ b/quantum/plugins/cisco/run_tests.py
@@ -33,7 +33,6 @@ sys.path.append(os.getcwd())
 sys.path.append(os.path.dirname(__file__))
 
 from quantum.common.test_lib import run_tests, test_config
-import quantum.tests.unit
 
 
 def main():
diff --git a/quantum/plugins/cisco/ucs/cisco_ucs_configuration.py b/quantum/plugins/cisco/ucs/cisco_ucs_configuration.py
index a1a9d16a3..b065ddfc2 100644
--- a/quantum/plugins/cisco/ucs/cisco_ucs_configuration.py
+++ b/quantum/plugins/cisco/ucs/cisco_ucs_configuration.py
@@ -17,8 +17,6 @@
 # @author: Sumit Naiksatam, Cisco Systems, Inc.
 #
 
-import os
-
 from quantum.common.config import find_config_file
 from quantum.plugins.cisco.common import cisco_configparser as confp
 
diff --git a/quantum/plugins/cisco/ucs/cisco_ucs_inventory.py b/quantum/plugins/cisco/ucs/cisco_ucs_inventory.py
index a2d1694a0..90b5983b1 100644
--- a/quantum/plugins/cisco/ucs/cisco_ucs_inventory.py
+++ b/quantum/plugins/cisco/ucs/cisco_ucs_inventory.py
@@ -70,7 +70,6 @@ from quantum.plugins.cisco.l2device_inventory_base import (
 from quantum.plugins.cisco.common import cisco_constants as const
 from quantum.plugins.cisco.common import cisco_credentials as cred
 from quantum.plugins.cisco.common import cisco_exceptions as cexc
-from quantum.plugins.cisco.common import cisco_utils as cutil
 from quantum.plugins.cisco.db import api as db
 from quantum.plugins.cisco.db import ucs_db as udb
 from quantum.plugins.cisco.ucs import (
diff --git a/quantum/plugins/cisco/ucs/cisco_ucs_inventory_configuration.py b/quantum/plugins/cisco/ucs/cisco_ucs_inventory_configuration.py
index 5b4298f9c..e8474f672 100644
--- a/quantum/plugins/cisco/ucs/cisco_ucs_inventory_configuration.py
+++ b/quantum/plugins/cisco/ucs/cisco_ucs_inventory_configuration.py
@@ -17,8 +17,6 @@
 # @author: Sumit Naiksatam, Cisco Systems, Inc.
 #
 
-import os
-
 from quantum.common.config import find_config_file
 from quantum.plugins.cisco.common import cisco_configparser as confp
 
diff --git a/quantum/plugins/cisco/ucs/cisco_ucs_network_driver.py b/quantum/plugins/cisco/ucs/cisco_ucs_network_driver.py
index e1bfdbb0c..522ae6e59 100644
--- a/quantum/plugins/cisco/ucs/cisco_ucs_network_driver.py
+++ b/quantum/plugins/cisco/ucs/cisco_ucs_network_driver.py
@@ -26,8 +26,6 @@ import logging
 from xml.etree import ElementTree as et
 
 from quantum.plugins.cisco.common import cisco_constants as const
-from quantum.plugins.cisco.common import cisco_exceptions as cexc
-from quantum.plugins.cisco.ucs import cisco_getvif as gvif
 
 
 LOG = logging.getLogger(__name__)
diff --git a/quantum/plugins/cisco/ucs/cisco_ucs_plugin.py b/quantum/plugins/cisco/ucs/cisco_ucs_plugin.py
index e2dcd6715..5c9887f8b 100644
--- a/quantum/plugins/cisco/ucs/cisco_ucs_plugin.py
+++ b/quantum/plugins/cisco/ucs/cisco_ucs_plugin.py
@@ -19,7 +19,6 @@
 
 import logging
 
-from quantum.common import exceptions as exc
 from quantum.openstack.common import importutils
 from quantum.plugins.cisco.common import cisco_constants as const
 from quantum.plugins.cisco.common import cisco_credentials as cred
diff --git a/quantum/plugins/linuxbridge/db/l2network_models.py b/quantum/plugins/linuxbridge/db/l2network_models.py
index 7a280a587..7eb0091d0 100644
--- a/quantum/plugins/linuxbridge/db/l2network_models.py
+++ b/quantum/plugins/linuxbridge/db/l2network_models.py
@@ -15,12 +15,8 @@
 #    under the License.
 # @author: Rohit Agarwalla, Cisco Systems, Inc.
 
-import uuid
-
 from sqlalchemy import Column, Integer, String, Boolean
-from sqlalchemy.orm import relation, object_mapper
 
-from quantum.db import models
 from quantum.db.models import BASE
 from quantum.db.models import QuantumBase
 
diff --git a/quantum/plugins/linuxbridge/run_tests.py b/quantum/plugins/linuxbridge/run_tests.py
index 9d8a263a6..8e5b38ed9 100644
--- a/quantum/plugins/linuxbridge/run_tests.py
+++ b/quantum/plugins/linuxbridge/run_tests.py
@@ -25,10 +25,8 @@ To run all tests::
     PLUGIN_DIR=quantum/plugins/linuxbridge ./run_tests.sh
 """
 
-import logging
 import os
 import sys
-import unittest
 
 from nose import config
 from nose import core
@@ -39,9 +37,7 @@ sys.path.append(os.path.dirname(__file__))
 
 from quantum.api.api_common import OperationalStatus
 from quantum.common.test_lib import run_tests, test_config
-from quantum.plugins.linuxbridge.LinuxBridgePlugin import LinuxBridgePlugin
 import quantum.tests.unit
-from tests.unit.test_database import L2networkDBTest
 
 
 if __name__ == '__main__':
diff --git a/quantum/plugins/openvswitch/agent/ovs_quantum_agent.py b/quantum/plugins/openvswitch/agent/ovs_quantum_agent.py
index 21488f5bf..ee9a16480 100755
--- a/quantum/plugins/openvswitch/agent/ovs_quantum_agent.py
+++ b/quantum/plugins/openvswitch/agent/ovs_quantum_agent.py
@@ -21,11 +21,9 @@
 
 import logging
 from optparse import OptionParser
-import signal
 import sys
 import time
 
-import sqlalchemy
 from sqlalchemy.ext import sqlsoup
 
 from quantum.agent.linux import ovs_lib
diff --git a/quantum/plugins/openvswitch/ovs_db.py b/quantum/plugins/openvswitch/ovs_db.py
index b3b294cf4..49adade44 100644
--- a/quantum/plugins/openvswitch/ovs_db.py
+++ b/quantum/plugins/openvswitch/ovs_db.py
@@ -20,7 +20,6 @@
 from sqlalchemy.orm import exc
 
 import quantum.db.api as db
-import quantum.db.models as models
 from quantum.plugins.openvswitch import ovs_models
 
 
diff --git a/quantum/plugins/openvswitch/ovs_models.py b/quantum/plugins/openvswitch/ovs_models.py
index 580402436..3bb7ede2a 100644
--- a/quantum/plugins/openvswitch/ovs_models.py
+++ b/quantum/plugins/openvswitch/ovs_models.py
@@ -17,11 +17,7 @@
 # @author: Brad Hall, Nicira Networks, Inc.
 # @author: Dan Wendlandt, Nicira Networks, Inc.
 
-import uuid
-
-from sqlalchemy import Column, Integer, String, ForeignKey
-from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy.orm import relation
+from sqlalchemy import Column, Integer, String
 
 from quantum.db.models import BASE
 
diff --git a/quantum/plugins/openvswitch/ovs_quantum_plugin.py b/quantum/plugins/openvswitch/ovs_quantum_plugin.py
index 35eb92d27..aae2f2992 100644
--- a/quantum/plugins/openvswitch/ovs_quantum_plugin.py
+++ b/quantum/plugins/openvswitch/ovs_quantum_plugin.py
@@ -19,9 +19,7 @@
 # @author: Dave Lapsley, Nicira Networks, Inc.
 
 import logging
-from optparse import OptionParser
 import os
-import sys
 
 from quantum.api.api_common import OperationalStatus
 from quantum.common import exceptions as q_exc
diff --git a/quantum/plugins/openvswitch/run_tests.py b/quantum/plugins/openvswitch/run_tests.py
index e65bf6624..b55432f83 100755
--- a/quantum/plugins/openvswitch/run_tests.py
+++ b/quantum/plugins/openvswitch/run_tests.py
@@ -25,10 +25,8 @@ To run all tests::
     PLUGIN_DIR=quantum/plugins/openvswitch ./run_tests.sh
 """
 
-import logging
 import os
 import sys
-import unittest
 
 from nose import config
 from nose import core
@@ -38,7 +36,6 @@ sys.path.append(os.path.dirname(__file__))
 
 from quantum.api.api_common import OperationalStatus
 from quantum.common.test_lib import run_tests, test_config
-from quantum.plugins.openvswitch.tests.unit.test_vlan_map import VlanMapTest
 import quantum.tests.unit
 
 
diff --git a/quantum/plugins/openvswitch/tests/unit/test_tunnel.py b/quantum/plugins/openvswitch/tests/unit/test_tunnel.py
index b06a8fcdf..48a31db47 100644
--- a/quantum/plugins/openvswitch/tests/unit/test_tunnel.py
+++ b/quantum/plugins/openvswitch/tests/unit/test_tunnel.py
@@ -16,7 +16,6 @@
 #
 # @author: Dave Lapsley, Nicira Networks, Inc.
 
-import os
 import unittest
 
 import mox
diff --git a/quantum/plugins/ryu/db/models.py b/quantum/plugins/ryu/db/models.py
index e31f2051c..e40f9cac5 100644
--- a/quantum/plugins/ryu/db/models.py
+++ b/quantum/plugins/ryu/db/models.py
@@ -15,7 +15,6 @@
 #    under the License.
 
 from sqlalchemy import Column, Integer, String
-from sqlalchemy.ext.declarative import declarative_base
 
 from quantum.db.models import BASE
 
diff --git a/quantum/plugins/ryu/run_tests.py b/quantum/plugins/ryu/run_tests.py
index 4b66c23e2..2911d2345 100644
--- a/quantum/plugins/ryu/run_tests.py
+++ b/quantum/plugins/ryu/run_tests.py
@@ -55,9 +55,6 @@ if __name__ == '__main__':
     # patch modules for ryu.app.client and ryu.app.rest_nw_id
     # With those, plugin can be tested without ryu installed
     with patch_fake_ryu_client():
-        # to find quantum/etc/plugin/ryu/ryu.ini before chdir()
-        import ryu_quantum_plugin
-
         c = config.Config(stream=sys.stdout,
                           env=os.environ,
                           verbosity=3,
diff --git a/quantum/plugins/ryu/tests/unit/basetest.py b/quantum/plugins/ryu/tests/unit/basetest.py
index 0d2e007c2..5dbd39a1c 100644
--- a/quantum/plugins/ryu/tests/unit/basetest.py
+++ b/quantum/plugins/ryu/tests/unit/basetest.py
@@ -20,7 +20,6 @@ import stubout
 import unittest
 
 import quantum.db.api as db
-import quantum.plugins.ryu.db.models    # for ryu specific tables
 from quantum.plugins.ryu.tests.unit import utils
 
 
diff --git a/quantum/tests/unit/test_api.py b/quantum/tests/unit/test_api.py
index eb1ac748a..67fc622fc 100644
--- a/quantum/tests/unit/test_api.py
+++ b/quantum/tests/unit/test_api.py
@@ -19,7 +19,7 @@
 import unittest
 
 from lxml import etree
-from webob import exc, request
+from webob import exc
 
 import quantum.api.attachments as atts
 import quantum.api.networks as nets