diff --git a/cinderclient/apiclient/base.py b/cinderclient/apiclient/base.py
index f1febe30d..c0bcd24a5 100644
--- a/cinderclient/apiclient/base.py
+++ b/cinderclient/apiclient/base.py
@@ -27,7 +27,7 @@ import abc
 import copy
 
 from requests import Response
-import six
+
 
 from cinderclient.apiclient import exceptions
 from cinderclient import utils
@@ -199,8 +199,7 @@ class BaseManager(HookableMixin):
         return self.client.delete(url)
 
 
-@six.add_metaclass(abc.ABCMeta)
-class ManagerWithFind(BaseManager):
+class ManagerWithFind(BaseManager, metaclass=abc.ABCMeta):
     """Manager with additional `find()`/`findall()` methods."""
 
     @abc.abstractmethod
diff --git a/cinderclient/base.py b/cinderclient/base.py
index 40ce381be..f86a3a8b0 100644
--- a/cinderclient/base.py
+++ b/cinderclient/base.py
@@ -23,8 +23,6 @@ import contextlib
 import hashlib
 import os
 
-import six
-
 from cinderclient.apiclient import base as common_base
 from cinderclient import exceptions
 from cinderclient import utils
@@ -153,7 +151,7 @@ class Manager(common_base.HookableMixin):
 
         if offset:
             query_params['offset'] = offset
-        query_params = utils.unicode_key_value_to_string(query_params)
+        query_params = query_params
         # Transform the dict to a sequence of two-element tuples in fixed
         # order, then the encoded string will be consistent in Python 2&3.
 
@@ -188,7 +186,7 @@ class Manager(common_base.HookableMixin):
         if not sort:
             return None
 
-        if isinstance(sort, six.string_types):
+        if isinstance(sort, str):
             # Convert the string into a list for consistent validation
             sort = [s for s in sort.split(',') if s]
 
@@ -352,7 +350,7 @@ class Manager(common_base.HookableMixin):
         self.api.client.delete_with_base_url(url)
 
 
-class ManagerWithFind(six.with_metaclass(abc.ABCMeta, Manager)):
+class ManagerWithFind(Manager, metaclass=abc.ABCMeta):
     """
     Like a `Manager`, but with additional `find()`/`findall()` methods.
     """
diff --git a/cinderclient/client.py b/cinderclient/client.py
index ffc491fa7..2d7b80d14 100644
--- a/cinderclient/client.py
+++ b/cinderclient/client.py
@@ -24,7 +24,8 @@ import logging
 import os
 import pkgutil
 import re
-import six
+import urllib
+from urllib import parse as urlparse
 
 from keystoneauth1 import access
 from keystoneauth1 import adapter
@@ -34,8 +35,6 @@ from oslo_utils import encodeutils
 from oslo_utils import importutils
 from oslo_utils import strutils
 import requests
-from six.moves import urllib
-import six.moves.urllib.parse as urlparse
 
 from cinderclient._i18n import _
 from cinderclient import api_versions
@@ -131,7 +130,7 @@ def get_server_version(url, insecure=False, cacert=None):
                 current_version = '2.0'
     except exceptions.ClientException as e:
         logger.warning("Error in server version query:%s\n"
-                       "Returning APIVersion 2.0", six.text_type(e.message))
+                       "Returning APIVersion 2.0", str(e.message))
     return (api_versions.APIVersion(min_version),
             api_versions.APIVersion(current_version))
 
@@ -239,7 +238,7 @@ class SessionClient(adapter.LegacyJsonAdapter):
             version = get_volume_api_from_url(self.get_endpoint())
         except exceptions.UnsupportedVersion as e:
             msg = (_("Service catalog returned invalid url.\n"
-                     "%s") % six.text_type(e))
+                     "%s") % str(e))
             raise exceptions.UnsupportedVersion(msg)
 
         return version
@@ -496,10 +495,10 @@ class HTTPClient(object):
         except exceptions.UnsupportedVersion as e:
             if self.management_url == self.os_endpoint:
                 msg = (_("Invalid url was specified in --os-endpoint %s")
-                       % six.text_type(e))
+                       % str(e))
             else:
                 msg = (_("Service catalog returned invalid url.\n"
-                         "%s") % six.text_type(e))
+                         "%s") % str(e))
 
             raise exceptions.UnsupportedVersion(msg)
 
diff --git a/cinderclient/shell.py b/cinderclient/shell.py
index ff8c4c4c8..9e9cfb1f1 100644
--- a/cinderclient/shell.py
+++ b/cinderclient/shell.py
@@ -32,8 +32,7 @@ from keystoneauth1 import session
 from oslo_utils import encodeutils
 from oslo_utils import importutils
 import requests
-import six
-import six.moves.urllib.parse as urlparse
+from urllib import parse as urlparse
 
 import cinderclient
 from cinderclient._i18n import _
@@ -395,7 +394,7 @@ class OpenStackCinderShell(object):
         else:
             msg = (_(" (Supported until API version %(end)s)")
                 % {"end": end_version.get_string()})
-        return six.text_type(msg)
+        return str(msg)
 
     def _find_actions(self, subparsers, actions_module, version,
                       do_help, input_args):
@@ -1026,7 +1025,7 @@ def main():
         sys.exit(130)
     except Exception as e:
         logger.debug(e, exc_info=1)
-        print("ERROR: %s" % six.text_type(e), file=sys.stderr)
+        print("ERROR: %s" % str(e), file=sys.stderr)
         sys.exit(1)
 
 
diff --git a/cinderclient/shell_utils.py b/cinderclient/shell_utils.py
index b5db281ec..cd8f1628f 100644
--- a/cinderclient/shell_utils.py
+++ b/cinderclient/shell_utils.py
@@ -201,7 +201,7 @@ def print_resource_filter_list(filters):
 
 
 def quota_show(quotas):
-    quotas_info_dict = utils.unicode_key_value_to_string(quotas._info)
+    quotas_info_dict = quotas._info
     quota_dict = {}
     for resource in quotas_info_dict.keys():
         good_name = False
@@ -216,7 +216,7 @@ def quota_show(quotas):
 
 def quota_usage_show(quotas):
     quota_list = []
-    quotas_info_dict = utils.unicode_key_value_to_string(quotas._info)
+    quotas_info_dict = quotas._info
     for resource in quotas_info_dict.keys():
         good_name = False
         for name in _quota_resources:
diff --git a/cinderclient/tests/functional/base.py b/cinderclient/tests/functional/base.py
index 3d2e2f8f9..2f03475a6 100644
--- a/cinderclient/tests/functional/base.py
+++ b/cinderclient/tests/functional/base.py
@@ -10,10 +10,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import configparser
 import os
 import time
 
-import six
 from tempest.lib.cli import base
 from tempest.lib.cli import output_parser
 from tempest.lib import exceptions
@@ -38,7 +38,7 @@ def credentials():
                    os.environ.get('OS_PROJECT_NAME'))
     auth_url = os.environ.get('OS_AUTH_URL')
 
-    config = six.moves.configparser.RawConfigParser()
+    config = configparser.RawConfigParser()
     if config.read(_CREDS_FILE):
         username = username or config.get('admin', 'user')
         password = password or config.get('admin', 'pass')
@@ -101,7 +101,7 @@ class ClientTestBase(base.ClientTestBase):
         obj = {}
         items = self.parser.listing(output)
         for item in items:
-            obj[item['Property']] = six.text_type(item['Value'])
+            obj[item['Property']] = str(item['Value'])
         return obj
 
     def object_cmd(self, object_name, cmd):
diff --git a/cinderclient/tests/functional/test_snapshot_create_cli.py b/cinderclient/tests/functional/test_snapshot_create_cli.py
index 7ef5dfda5..4c0bd1204 100644
--- a/cinderclient/tests/functional/test_snapshot_create_cli.py
+++ b/cinderclient/tests/functional/test_snapshot_create_cli.py
@@ -10,7 +10,7 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
-import six
+
 
 from cinderclient.tests.functional import base
 
@@ -47,7 +47,7 @@ class CinderSnapshotTests(base.ClientTestBase):
             'snapshot',
             params='--metadata test_metadata=test_date {0}'.format(
                 self.volume['id']))
-        self.assertEqual(six.text_type({u'test_metadata': u'test_date'}),
+        self.assertEqual(str({'test_metadata': 'test_date'}),
                          snapshot['metadata'])
         self.object_delete('snapshot', snapshot['id'])
         self.check_object_deleted('snapshot', snapshot['id'])
diff --git a/cinderclient/tests/functional/test_volume_create_cli.py b/cinderclient/tests/functional/test_volume_create_cli.py
index deae383a0..9c9fc0d47 100644
--- a/cinderclient/tests/functional/test_volume_create_cli.py
+++ b/cinderclient/tests/functional/test_volume_create_cli.py
@@ -11,7 +11,6 @@
 #    under the License.
 
 import ddt
-import six
 from tempest.lib import exceptions
 
 from cinderclient.tests.functional import base
@@ -32,9 +31,9 @@ class CinderVolumeNegativeTests(base.ClientTestBase):
     )
     @ddt.unpack
     def test_volume_create_with_incorrect_size(self, value, ex_text):
-
-        six.assertRaisesRegex(self, exceptions.CommandFailed, ex_text,
-                              self.object_create, 'volume', params=value)
+        self.assertRaisesRegex(exceptions.CommandFailed,
+                               ex_text, self.object_create,
+                               'volume', params=value)
 
 
 class CinderVolumeTests(base.ClientTestBase):
@@ -96,5 +95,5 @@ class CinderVolumeTestsWithParameters(base.ClientTestBase):
         """
         volume = self.object_create(
             'volume', params='--metadata test_metadata=test_date 1')
-        self.assertEqual(six.text_type({u'test_metadata': u'test_date'}),
+        self.assertEqual(str({'test_metadata': 'test_date'}),
                          volume['metadata'])
diff --git a/cinderclient/tests/functional/test_volume_extend_cli.py b/cinderclient/tests/functional/test_volume_extend_cli.py
index 8dd557a2b..6a5c99cbf 100644
--- a/cinderclient/tests/functional/test_volume_extend_cli.py
+++ b/cinderclient/tests/functional/test_volume_extend_cli.py
@@ -11,8 +11,6 @@
 #    under the License.
 
 import ddt
-import six
-
 from tempest.lib import exceptions
 
 from cinderclient.tests.functional import base
@@ -39,9 +37,8 @@ class CinderVolumeExtendNegativeTests(base.ClientTestBase):
     )
     @ddt.unpack
     def test_volume_extend_with_incorrect_size(self, value, ex_text):
-
-        six.assertRaisesRegex(
-            self, exceptions.CommandFailed, ex_text, self.cinder, 'extend',
+        self.assertRaisesRegex(
+            exceptions.CommandFailed, ex_text, self.cinder, 'extend',
             params='{0} {1}'.format(self.volume['id'], value))
 
     @ddt.data(
@@ -52,7 +49,6 @@ class CinderVolumeExtendNegativeTests(base.ClientTestBase):
     )
     @ddt.unpack
     def test_volume_extend_with_incorrect_volume_id(self, value, ex_text):
-
-        six.assertRaisesRegex(
-            self, exceptions.CommandFailed, ex_text, self.cinder, 'extend',
+        self.assertRaisesRegex(
+            exceptions.CommandFailed, ex_text, self.cinder, 'extend',
             params='{0} 2'.format(value))
diff --git a/cinderclient/tests/unit/test_api_versions.py b/cinderclient/tests/unit/test_api_versions.py
index 0f8690006..d8aad761a 100644
--- a/cinderclient/tests/unit/test_api_versions.py
+++ b/cinderclient/tests/unit/test_api_versions.py
@@ -16,7 +16,6 @@
 from unittest import mock
 
 import ddt
-import six
 
 from cinderclient import api_versions
 from cinderclient import client as base_client
@@ -273,4 +272,4 @@ class DiscoverVersionTestCase(utils.TestCase):
         v2_client = base_client.Client('2.0')
         ex = self.assertRaises(exceptions.UnsupportedVersion,
                                api_versions.get_highest_version, v2_client)
-        self.assertIn('Invalid client version 2.0 to get', six.text_type(ex))
+        self.assertIn('Invalid client version 2.0 to get', str(ex))
diff --git a/cinderclient/tests/unit/test_base.py b/cinderclient/tests/unit/test_base.py
index 1b545497d..6ec2ca6f4 100644
--- a/cinderclient/tests/unit/test_base.py
+++ b/cinderclient/tests/unit/test_base.py
@@ -15,7 +15,6 @@
 from unittest import mock
 
 import requests
-import six
 
 from cinderclient import api_versions
 from cinderclient.apiclient import base as common_base
@@ -111,20 +110,6 @@ class BaseTest(utils.TestCase):
         r1 = base.Resource(manager, {'id': 1})
         self.assertEqual(version, r1.api_version)
 
-    @mock.patch('cinderclient.utils.unicode_key_value_to_string',
-                side_effect=lambda x: x)
-    def test_build_list_url_failed(self, fake_encode):
-        # NOTE(mdovgal): This test is reasonable only for py27 version,
-        #                due to issue with parse.urlencode method only in py27
-        if six.PY2:
-            arguments = dict(resource_type = 'volumes',
-                             search_opts = {'all_tenants': 1,
-                                            'name': u'ффф'})
-            manager = base.Manager(None)
-            self.assertRaises(UnicodeEncodeError,
-                              manager._build_list_url,
-                              **arguments)
-
     def test__list_no_link(self):
         api = mock.Mock()
         api.client.get.return_value = (mock.sentinel.resp,
diff --git a/cinderclient/tests/unit/test_client.py b/cinderclient/tests/unit/test_client.py
index 6770f2439..d92e1f20d 100644
--- a/cinderclient/tests/unit/test_client.py
+++ b/cinderclient/tests/unit/test_client.py
@@ -20,7 +20,6 @@ import fixtures
 from keystoneauth1 import adapter
 from keystoneauth1 import exceptions as keystone_exception
 from oslo_serialization import jsonutils
-import six
 
 from cinderclient import api_versions
 import cinderclient.client
@@ -136,7 +135,7 @@ class ClientTest(utils.TestCase):
         request_id = "req-f551871a-4950-4225-9b2c-29a14c8f075e"
         mock_response = utils.TestResponse({
             "status_code": 202,
-            "text": six.b(json.dumps(resp)),
+            "text": json.dumps(resp).encode("latin-1"),
             "headers": {"x-openstack-request-id": request_id},
         })
 
@@ -176,7 +175,7 @@ class ClientTest(utils.TestCase):
 
         mock_response = utils.TestResponse({
             "status_code": 400,
-            "text": six.b(json.dumps(resp)),
+            "text": json.dumps(resp).encode("latin-1"),
         })
 
         # 'request' method of Adaptor will return 400 response
@@ -202,7 +201,7 @@ class ClientTest(utils.TestCase):
 
         mock_response = utils.TestResponse({
             "status_code": 413,
-            "text": six.b(json.dumps(resp)),
+            "text": json.dumps(resp).encode("latin-1"),
         })
 
         # 'request' method of Adaptor will return 413 response
diff --git a/cinderclient/tests/unit/test_shell.py b/cinderclient/tests/unit/test_shell.py
index c8a6375d8..8c5df116b 100644
--- a/cinderclient/tests/unit/test_shell.py
+++ b/cinderclient/tests/unit/test_shell.py
@@ -12,6 +12,7 @@
 # limitations under the License.
 
 import argparse
+import io
 import re
 import sys
 import unittest
@@ -24,7 +25,6 @@ from keystoneauth1.exceptions import DiscoveryFailure
 from keystoneauth1.identity.generic.password import Password as ks_password
 from keystoneauth1 import session
 import requests_mock
-from six import moves
 from testtools import matchers
 
 import cinderclient
@@ -64,7 +64,7 @@ class ShellTest(utils.TestCase):
     def shell(self, argstr):
         orig = sys.stdout
         try:
-            sys.stdout = moves.StringIO()
+            sys.stdout = io.StringIO()
             _shell = shell.OpenStackCinderShell()
             _shell.main(argstr.split())
         except SystemExit:
diff --git a/cinderclient/tests/unit/test_utils.py b/cinderclient/tests/unit/test_utils.py
index 1243b0a62..a9636db83 100644
--- a/cinderclient/tests/unit/test_utils.py
+++ b/cinderclient/tests/unit/test_utils.py
@@ -12,12 +12,11 @@
 # limitations under the License.
 
 import collections
+import io
 import sys
 from unittest import mock
 
 import ddt
-import six
-from six import moves
 
 from cinderclient import api_versions
 from cinderclient.apiclient import base as common_base
@@ -151,7 +150,7 @@ class CaptureStdout(object):
     """Context manager for capturing stdout from statements in its block."""
     def __enter__(self):
         self.real_stdout = sys.stdout
-        self.stringio = moves.StringIO()
+        self.stringio = io.StringIO()
         sys.stdout = self.stringio
         return self
 
@@ -309,16 +308,6 @@ class PrintListTestCase(test_utils.TestCase):
 +---+-----+
 """, cso.read())
 
-    def test_unicode_key_value_to_string(self):
-        src = {u'key': u'\u70fd\u7231\u5a77'}
-        expected = {'key': '\xe7\x83\xbd\xe7\x88\xb1\xe5\xa9\xb7'}
-        if six.PY2:
-            self.assertEqual(expected, utils.unicode_key_value_to_string(src))
-        else:
-            # u'xxxx' in PY3 is str, we will not get extra 'u' from cli
-            # output in PY3
-            self.assertEqual(src, utils.unicode_key_value_to_string(src))
-
 
 class PrintDictTestCase(test_utils.TestCase):
 
diff --git a/cinderclient/tests/unit/utils.py b/cinderclient/tests/unit/utils.py
index 8f4e9acf7..680062e3d 100644
--- a/cinderclient/tests/unit/utils.py
+++ b/cinderclient/tests/unit/utils.py
@@ -18,7 +18,6 @@ from unittest import mock
 import fixtures
 import requests
 from requests_mock.contrib import fixture as requests_mock_fixture
-import six
 import testtools
 
 
@@ -92,9 +91,9 @@ class FixturedTestCase(TestCase):
 
         if body:
             req_data = self.requests.last_request.body
-            if isinstance(req_data, six.binary_type):
+            if isinstance(req_data, bytes):
                 req_data = req_data.decode('utf-8')
-            if not isinstance(body, six.string_types):
+            if not isinstance(body, str):
                 # json load if the input body to match against is not a string
                 req_data = json.loads(req_data)
             self.assertEqual(body, req_data)
diff --git a/cinderclient/tests/unit/v2/fakes.py b/cinderclient/tests/unit/v2/fakes.py
index 0dd269e1d..99a87d018 100644
--- a/cinderclient/tests/unit/v2/fakes.py
+++ b/cinderclient/tests/unit/v2/fakes.py
@@ -14,7 +14,7 @@
 
 from datetime import datetime
 
-import six.moves.urllib.parse as urlparse
+from urllib import parse as urlparse
 
 from cinderclient import client as base_client
 from cinderclient.tests.unit import fakes
diff --git a/cinderclient/tests/unit/v2/test_availability_zone.py b/cinderclient/tests/unit/v2/test_availability_zone.py
index 8c2e1ebd8..e9b5d020e 100644
--- a/cinderclient/tests/unit/v2/test_availability_zone.py
+++ b/cinderclient/tests/unit/v2/test_availability_zone.py
@@ -14,8 +14,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
-
 from cinderclient.v2 import availability_zones
 from cinderclient.v2 import shell
 
@@ -44,8 +42,8 @@ class AvailabilityZoneTest(utils.FixturedTestCase):
 
         self.assertEqual(2, len(zones))
 
-        l0 = [six.u('zone-1'), six.u('available')]
-        l1 = [six.u('zone-2'), six.u('not available')]
+        l0 = ['zone-1', 'available']
+        l1 = ['zone-2', 'not available']
 
         z0 = shell.treeizeAvailabilityZone(zones[0])
         z1 = shell.treeizeAvailabilityZone(zones[1])
@@ -66,15 +64,15 @@ class AvailabilityZoneTest(utils.FixturedTestCase):
 
         self.assertEqual(3, len(zones))
 
-        l0 = [six.u('zone-1'), six.u('available')]
-        l1 = [six.u('|- fake_host-1'), six.u('')]
-        l2 = [six.u('| |- cinder-volume'),
-              six.u('enabled :-) 2012-12-26 14:45:25')]
-        l3 = [six.u('internal'), six.u('available')]
-        l4 = [six.u('|- fake_host-1'), six.u('')]
-        l5 = [six.u('| |- cinder-sched'),
-              six.u('enabled :-) 2012-12-26 14:45:24')]
-        l6 = [six.u('zone-2'), six.u('not available')]
+        l0 = ['zone-1', 'available']
+        l1 = ['|- fake_host-1', '']
+        l2 = ['| |- cinder-volume',
+              'enabled :-) 2012-12-26 14:45:25']
+        l3 = ['internal', 'available']
+        l4 = ['|- fake_host-1', '']
+        l5 = ['| |- cinder-sched',
+              'enabled :-) 2012-12-26 14:45:24']
+        l6 = ['zone-2', 'not available']
 
         z0 = shell.treeizeAvailabilityZone(zones[0])
         z1 = shell.treeizeAvailabilityZone(zones[1])
diff --git a/cinderclient/tests/unit/v2/test_shell.py b/cinderclient/tests/unit/v2/test_shell.py
index f6f6355db..f54846e95 100644
--- a/cinderclient/tests/unit/v2/test_shell.py
+++ b/cinderclient/tests/unit/v2/test_shell.py
@@ -18,7 +18,7 @@ from unittest import mock
 import ddt
 import fixtures
 from requests_mock.contrib import fixture as requests_mock_fixture
-from six.moves.urllib import parse
+from urllib import parse
 
 from cinderclient import client
 from cinderclient import exceptions
diff --git a/cinderclient/tests/unit/v3/test_messages.py b/cinderclient/tests/unit/v3/test_messages.py
index 262a7777b..9f22996ce 100644
--- a/cinderclient/tests/unit/v3/test_messages.py
+++ b/cinderclient/tests/unit/v3/test_messages.py
@@ -9,9 +9,9 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
+from urllib import parse
 
 import ddt
-from six.moves.urllib import parse
 
 from cinderclient import api_versions
 from cinderclient.tests.unit import utils
diff --git a/cinderclient/tests/unit/v3/test_shell.py b/cinderclient/tests/unit/v3/test_shell.py
index 0332ae3d1..054f332c5 100644
--- a/cinderclient/tests/unit/v3/test_shell.py
+++ b/cinderclient/tests/unit/v3/test_shell.py
@@ -39,12 +39,11 @@
 #             return original(manager, name_or_id, **kwargs)
 
 from unittest import mock
+from urllib import parse
 
 import ddt
 import fixtures
 from requests_mock.contrib import fixture as requests_mock_fixture
-import six
-from six.moves.urllib import parse
 
 import cinderclient
 from cinderclient import api_versions
@@ -322,7 +321,7 @@ class ShellTest(utils.TestCase):
         self.assert_call_contained(
             parse.urlencode(
                 {'extra_specs':
-                    {six.text_type('key'): six.text_type('value')}}))
+                    {'key': 'value'}}))
         self.assert_call_contained(parse.urlencode({'is_public': None}))
 
     def test_type_list_public(self):
@@ -1150,11 +1149,7 @@ class ShellTest(utils.TestCase):
                           self.run_command, '--os-volume-api-version 3.32 '
                           'service-set-log')
         set_levels_mock.assert_not_called()
-        # Different error message from argparse library in Python 2 and 3
-        if six.PY3:
-            msg = 'the following arguments are required: <log-level>'
-        else:
-            msg = 'too few arguments'
+        msg = 'the following arguments are required: <log-level>'
         error_mock.assert_called_once_with(msg)
 
     @ddt.data('debug', 'DEBUG', 'info', 'INFO', 'warning', 'WARNING', 'error',
diff --git a/cinderclient/tests/unit/v3/test_volumes.py b/cinderclient/tests/unit/v3/test_volumes.py
index 79206f62f..e5b3f2183 100644
--- a/cinderclient/tests/unit/v3/test_volumes.py
+++ b/cinderclient/tests/unit/v3/test_volumes.py
@@ -14,6 +14,7 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
+from urllib import parse
 
 import ddt
 
@@ -24,8 +25,6 @@ from cinderclient.tests.unit.v3 import fakes
 from cinderclient.v3 import volume_snapshots
 from cinderclient.v3 import volumes
 
-from six.moves.urllib import parse
-
 
 @ddt.ddt
 class VolumesTest(utils.TestCase):
diff --git a/cinderclient/utils.py b/cinderclient/utils.py
index 3b0096736..8919fc616 100644
--- a/cinderclient/utils.py
+++ b/cinderclient/utils.py
@@ -12,15 +12,14 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
-import collections
 
+import collections
 import os
 import sys
+from urllib import parse
 import uuid
 
 import prettytable
-import six
-from six.moves.urllib import parse
 import stevedore
 
 from cinderclient import exceptions
@@ -156,7 +155,7 @@ def print_list(objs, fields, exclude_unavailable=False, formatters=None,
                         data = getattr(o, field_name, '')
                 if data is None:
                     data = '-'
-                if isinstance(data, six.string_types) and "\r" in data:
+                if isinstance(data, str) and "\r" in data:
                     data = data.replace("\r", " ")
                 row.append(data)
         rows.append(row)
@@ -172,7 +171,6 @@ def print_list(objs, fields, exclude_unavailable=False, formatters=None,
         for part in row:
             count = count + 1
             if isinstance(part, dict):
-                part = unicode_key_value_to_string(part)
                 row[count - 1] = part
         pt.add_row(row)
 
@@ -183,24 +181,6 @@ def print_list(objs, fields, exclude_unavailable=False, formatters=None,
     _print(pt, order_by)
 
 
-def _encode(src):
-    """remove extra 'u' in PY2."""
-    if six.PY2 and isinstance(src, six.text_type):
-        return src.encode('utf-8')
-    return src
-
-
-def unicode_key_value_to_string(src):
-    """Recursively converts dictionary keys to strings."""
-    if isinstance(src, dict):
-        return dict((_encode(k),
-                    _encode(unicode_key_value_to_string(v)))
-                    for k, v in src.items())
-    if isinstance(src, list):
-        return [unicode_key_value_to_string(item) for item in src]
-    return _encode(src)
-
-
 def build_query_param(params, sort=False):
     """parse list to url query parameters"""
 
@@ -249,10 +229,9 @@ def print_dict(d, property="Property", formatters=None):
         r = list(r)
 
         if r[0] in formatters:
-            r[1] = unicode_key_value_to_string(r[1])
             if isinstance(r[1], dict):
                 r[1] = _pretty_format_dict(r[1])
-        if isinstance(r[1], six.string_types) and "\r" in r[1]:
+        if isinstance(r[1], str) and "\r" in r[1]:
             r[1] = r[1].replace("\r", " ")
         pt.add_row(r)
     _print(pt, property)
@@ -343,10 +322,4 @@ def _load_entry_point(ep_name, name=None):
 
 
 def get_function_name(func):
-    if six.PY2:
-        if hasattr(func, "im_class"):
-            return "%s.%s" % (func.im_class, func.__name__)
-        else:
-            return "%s.%s" % (func.__module__, func.__name__)
-    else:
-        return "%s.%s" % (func.__module__, func.__qualname__)
+    return "%s.%s" % (func.__module__, func.__qualname__)
diff --git a/cinderclient/v2/shell.py b/cinderclient/v2/shell.py
index d41e014fb..e3f868200 100644
--- a/cinderclient/v2/shell.py
+++ b/cinderclient/v2/shell.py
@@ -20,7 +20,6 @@ import copy
 import os
 
 from oslo_utils import strutils
-import six
 
 from cinderclient import base
 from cinderclient import exceptions
@@ -295,7 +294,7 @@ def do_create(cs, args):
             # NOTE(vish): multiple copies of same hint will
             #             result in a list of values
             if key in hints:
-                if isinstance(hints[key], six.string_types):
+                if isinstance(hints[key], str):
                     hints[key] = [hints[key]]
                 hints[key] += [value]
             else:
@@ -1113,8 +1112,7 @@ def do_migrate(cs, args):
                               args.lock_volume)
         print("Request to migrate volume %s has been accepted." % (volume.id))
     except Exception as e:
-        print("Migration for volume %s failed: %s." % (volume.id,
-                                                       six.text_type(e)))
+        print("Migration for volume %s failed: %s." % (volume.id, e))
 
 
 @utils.arg('volume', metavar='<volume>',
diff --git a/cinderclient/v3/group_types.py b/cinderclient/v3/group_types.py
index 74ea9b740..696f02be1 100644
--- a/cinderclient/v3/group_types.py
+++ b/cinderclient/v3/group_types.py
@@ -16,7 +16,7 @@
 
 """Group Type interface."""
 
-from six.moves.urllib import parse
+from urllib import parse
 
 from cinderclient import api_versions
 from cinderclient import base
diff --git a/cinderclient/v3/groups.py b/cinderclient/v3/groups.py
index e42f7509f..310006c94 100644
--- a/cinderclient/v3/groups.py
+++ b/cinderclient/v3/groups.py
@@ -137,7 +137,7 @@ class GroupManager(base.ManagerWithFind):
         :param group_id: The ID of the group to get.
         :rtype: :class:`Group`
         """
-        query_params = utils.unicode_key_value_to_string(kwargs)
+        query_params = kwargs
         query_string = utils.build_query_param(query_params, sort=True)
 
         return self._get("/groups/%s" % group_id + query_string,
diff --git a/cinderclient/v3/shell.py b/cinderclient/v3/shell.py
index eaded7eab..fd78c57dd 100644
--- a/cinderclient/v3/shell.py
+++ b/cinderclient/v3/shell.py
@@ -19,7 +19,6 @@ import collections
 import os
 
 from oslo_utils import strutils
-import six
 
 import cinderclient
 from cinderclient import api_versions
@@ -60,7 +59,7 @@ def do_list_filters(cs, args):
 
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.52',
            metavar='<key=value>',
@@ -142,7 +141,7 @@ def do_type_list(cs, args):
                   'Default=None.') % ', '.join(base.SORT_KEY_VALUES)))
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.33',
            metavar='<key=value>',
@@ -223,7 +222,7 @@ def do_backup_list(cs, args):
            help='Show detailed information about pools.')
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.33',
            metavar='<key=value>',
@@ -351,7 +350,7 @@ RESET_STATE_RESOURCES = {'volume': utils.find_volume,
            help='Display information from single tenant (Admin only).')
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.33',
            metavar='<key=value>',
@@ -629,7 +628,7 @@ def do_create(cs, args):
             # NOTE(vish): multiple copies of same hint will
             #             result in a list of values
             if key in hints:
-                if isinstance(hints[key], six.string_types):
+                if isinstance(hints[key], str):
                     hints[key] = [hints[key]]
                 hints[key] += [value]
             else:
@@ -748,7 +747,7 @@ def do_summary(cs, args):
 @api_versions.wraps('3.11')
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.52',
            metavar='<key=value>',
@@ -1031,7 +1030,7 @@ def do_migrate(cs, args):
         print("Request to migrate volume %s has been accepted." % (volume.id))
     except Exception as e:
         print("Migration for volume %s failed: %s." % (volume.id,
-                                                       six.text_type(e)))
+                                                       str(e)))
 
 
 @api_versions.wraps('3.9')
@@ -1338,7 +1337,7 @@ def do_manageable_list(cs, args):
            help='Shows details for all tenants. Admin only.')
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.33',
            metavar='<key=value>',
@@ -1650,7 +1649,7 @@ def do_group_list_replication_targets(cs, args):
                 "%s" % FILTER_DEPRECATED)
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.33',
            metavar='<key=value>',
@@ -1902,7 +1901,7 @@ def do_revert_to_snapshot(cs, args):
                 "%s" % FILTER_DEPRECATED)
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.33',
            metavar='<key=value>',
@@ -2042,7 +2041,7 @@ def do_message_delete(cs, args):
                 "%s" % FILTER_DEPRECATED)
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.33',
            metavar='<key=value>',
@@ -2171,7 +2170,7 @@ def do_snapshot_list(cs, args):
            help='Display information from single tenant (Admin only).')
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.33',
            metavar='<key=value>',
@@ -2571,7 +2570,7 @@ def do_transfer_create(cs, args):
            start_version='3.59')
 @utils.arg('--filters',
            action=AppendFilters,
-           type=six.text_type,
+           type=str,
            nargs='*',
            start_version='3.52',
            metavar='<key=value>',
diff --git a/cinderclient/v3/volume_types.py b/cinderclient/v3/volume_types.py
index c55a4a4a3..e82fbb3ac 100644
--- a/cinderclient/v3/volume_types.py
+++ b/cinderclient/v3/volume_types.py
@@ -15,7 +15,7 @@
 
 
 """Volume Type interface."""
-from six.moves.urllib import parse
+from urllib import parse
 
 from cinderclient.apiclient import base as common_base
 from cinderclient import base
diff --git a/lower-constraints.txt b/lower-constraints.txt
index d0c0ef7e2..947303a6d 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -52,7 +52,6 @@ requests-mock==1.2.0
 requests==2.23.0
 rfc3986==1.4.0
 simplejson==3.5.1
-six==1.15.0
 stestr==3.0.1
 stevedore==3.2.2
 tempest==26.0.0
diff --git a/requirements.txt b/requirements.txt
index 051474451..16cf67dc4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,6 @@ pbr>=5.5.0 # Apache-2.0
 PrettyTable<0.8,>=0.7.2 # BSD
 keystoneauth1>=4.2.1 # Apache-2.0
 simplejson>=3.5.1 # MIT
-six>=1.15.0 # MIT
 oslo.i18n>=5.0.1 # Apache-2.0
 oslo.utils>=4.7.0 # Apache-2.0
 requests>=2.23.0 # Apache-2.0
diff --git a/tools/colorizer.py b/tools/colorizer.py
index 7824b8c78..2a667b41f 100755
--- a/tools/colorizer.py
+++ b/tools/colorizer.py
@@ -46,7 +46,6 @@ import subunit
 import sys
 import unittest
 
-import six
 import testtools
 
 
@@ -277,7 +276,7 @@ class NovaTestResult(testtools.TestResult):
         self.stopTestRun()
 
     def stopTestRun(self):
-        for cls in list(six.iterkeys(self.results)):
+        for cls in list(self.results.keys()):
             self.writeTestCase(cls)
         self.stream.writeln()
         self.writeSlowTests()
diff --git a/tools/install_venv.py b/tools/install_venv.py
index 03fe5afa6..4ff48a228 100644
--- a/tools/install_venv.py
+++ b/tools/install_venv.py
@@ -18,11 +18,10 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import configparser
 import os
 import sys
 
-from six.moves import configparser
-
 import install_venv_common as install_venv
 
 
diff --git a/tools/lintstack.py b/tools/lintstack.py
index 1ae34d73d..1f7923a20 100755
--- a/tools/lintstack.py
+++ b/tools/lintstack.py
@@ -16,13 +16,13 @@
 
 """pylint error checking."""
 
+from io import StringIO
 import json
 import re
 import sys
 
 from pylint import lint
 from pylint.reporters import text
-from six.moves import cStringIO as StringIO
 
 ignore_codes = [
     # Note(maoy): E1103 is error code related to partial type inference