diff --git a/releasenotes/notes/add-new-identity-clients-as-library-5f7ndha733nwdsn9.yaml b/releasenotes/notes/add-new-identity-clients-as-library-5f7ndha733nwdsn9.yaml
index d1635e3..2e387a4 100644
--- a/releasenotes/notes/add-new-identity-clients-as-library-5f7ndha733nwdsn9.yaml
+++ b/releasenotes/notes/add-new-identity-clients-as-library-5f7ndha733nwdsn9.yaml
@@ -9,3 +9,4 @@
       * groups_client(v3)
       * users_client(v3)
       * identity_client(v3)
+      * roles_client(v3)
diff --git a/tempest/services/identity/v3/json/roles_client.py b/tempest/lib/services/identity/v3/roles_client.py
similarity index 100%
rename from tempest/services/identity/v3/json/roles_client.py
rename to tempest/lib/services/identity/v3/roles_client.py
diff --git a/tempest/services/identity/v3/__init__.py b/tempest/services/identity/v3/__init__.py
index 6da6dfb..ddbb0de 100644
--- a/tempest/services/identity/v3/__init__.py
+++ b/tempest/services/identity/v3/__init__.py
@@ -18,6 +18,7 @@
 from tempest.lib.services.identity.v3.policies_client import PoliciesClient
 from tempest.lib.services.identity.v3.projects_client import ProjectsClient
 from tempest.lib.services.identity.v3.regions_client import RegionsClient
+from tempest.lib.services.identity.v3.roles_client import RolesClient
 from tempest.lib.services.identity.v3.services_client import ServicesClient
 from tempest.lib.services.identity.v3.token_client import V3TokenClient
 from tempest.lib.services.identity.v3.users_client import UsersClient
@@ -26,11 +27,10 @@
 from tempest.services.identity.v3.json.domains_client import DomainsClient
 from tempest.services.identity.v3.json.inherited_roles_client import \
     InheritedRolesClient
-from tempest.services.identity.v3.json.roles_client import RolesClient
 from tempest.services.identity.v3.json.trusts_client import TrustsClient
 
 __all__ = ['EndPointsClient', 'GroupsClient', 'IdentityClient',
            'PoliciesClient', 'ProjectsClient', 'RegionsClient',
-           'ServicesClient', 'V3TokenClient', 'UsersClient',
+           'RolesClient', 'ServicesClient', 'V3TokenClient', 'UsersClient',
            'CredentialsClient', 'DomainsClient', 'InheritedRolesClient',
-           'RolesClient', 'TrustsClient', ]
+           'TrustsClient', ]
diff --git a/tempest/tests/common/test_dynamic_creds.py b/tempest/tests/common/test_dynamic_creds.py
index 613bc63..0033d4e 100644
--- a/tempest/tests/common/test_dynamic_creds.py
+++ b/tempest/tests/common/test_dynamic_creds.py
@@ -31,12 +31,12 @@
 from tempest.lib.services.identity.v3 import identity_client as v3_iden_client
 from tempest.lib.services.identity.v3 import projects_client as \
     v3_projects_client
+from tempest.lib.services.identity.v3 import roles_client as v3_roles_client
 from tempest.lib.services.identity.v3 import token_client as v3_token_client
 from tempest.lib.services.identity.v3 import users_client as \
     v3_users_client
 from tempest.lib.services.network import routers_client
 from tempest.services.identity.v3.json import domains_client
-from tempest.services.identity.v3.json import roles_client as v3_roles_client
 from tempest.tests import base
 from tempest.tests import fake_config
 from tempest.tests.lib import fake_http
diff --git a/tempest/tests/lib/services/identity/v3/test_roles_client.py b/tempest/tests/lib/services/identity/v3/test_roles_client.py
new file mode 100644
index 0000000..bad1ef9
--- /dev/null
+++ b/tempest/tests/lib/services/identity/v3/test_roles_client.py
@@ -0,0 +1,313 @@
+# Copyright 2016 NEC Corporation.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# 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 tempest.lib.services.identity.v3 import roles_client
+from tempest.tests.lib import fake_auth_provider
+from tempest.tests.lib.services import base
+
+
+class TestRolesClient(base.BaseServiceTest):
+    FAKE_ROLE_INFO = {
+        "role": {
+            "domain_id": "1",
+            "id": "1",
+            "name": "test",
+            "links": "example.com"
+        }
+    }
+
+    FAKE_LIST_ROLES = {
+        "roles": [
+            {
+                "domain_id": "1",
+                "id": "1",
+                "name": "test",
+                "links": "example.com"
+            },
+            {
+                "domain_id": "2",
+                "id": "2",
+                "name": "test2",
+                "links": "example.com"
+            }
+        ]
+    }
+
+    def setUp(self):
+        super(TestRolesClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.client = roles_client.RolesClient(fake_auth,
+                                               'identity', 'regionOne')
+
+    def _test_create_role(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.create_role,
+            'tempest.lib.common.rest_client.RestClient.post',
+            self.FAKE_ROLE_INFO,
+            bytes_body,
+            domain_id="1",
+            name="test",
+            status=201)
+
+    def _test_show_role(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.show_role,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_ROLE_INFO,
+            bytes_body,
+            role_id="1")
+
+    def _test_list_roles(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_roles,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_ROLES,
+            bytes_body)
+
+    def _test_update_role(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.update_role,
+            'tempest.lib.common.rest_client.RestClient.patch',
+            self.FAKE_ROLE_INFO,
+            bytes_body,
+            role_id="1",
+            name="test")
+
+    def _test_create_user_role_on_project(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.create_user_role_on_project,
+            'tempest.lib.common.rest_client.RestClient.put',
+            {},
+            bytes_body,
+            project_id="b344506af7644f6794d9cb316600b020",
+            user_id="123",
+            role_id="1234",
+            status=204)
+
+    def _test_create_user_role_on_domain(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.create_user_role_on_domain,
+            'tempest.lib.common.rest_client.RestClient.put',
+            {},
+            bytes_body,
+            domain_id="b344506af7644f6794d9cb316600b020",
+            user_id="123",
+            role_id="1234",
+            status=204)
+
+    def _test_list_user_roles_on_project(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_user_roles_on_project,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_ROLES,
+            bytes_body,
+            project_id="b344506af7644f6794d9cb316600b020",
+            user_id="123")
+
+    def _test_list_user_roles_on_domain(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_user_roles_on_domain,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_ROLES,
+            bytes_body,
+            domain_id="b344506af7644f6794d9cb316600b020",
+            user_id="123")
+
+    def _test_create_group_role_on_project(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.create_group_role_on_project,
+            'tempest.lib.common.rest_client.RestClient.put',
+            {},
+            bytes_body,
+            project_id="b344506af7644f6794d9cb316600b020",
+            group_id="123",
+            role_id="1234",
+            status=204)
+
+    def _test_create_group_role_on_domain(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.create_group_role_on_domain,
+            'tempest.lib.common.rest_client.RestClient.put',
+            {},
+            bytes_body,
+            domain_id="b344506af7644f6794d9cb316600b020",
+            group_id="123",
+            role_id="1234",
+            status=204)
+
+    def _test_list_group_roles_on_project(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_group_roles_on_project,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_ROLES,
+            bytes_body,
+            project_id="b344506af7644f6794d9cb316600b020",
+            group_id="123")
+
+    def _test_list_group_roles_on_domain(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_group_roles_on_domain,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_ROLES,
+            bytes_body,
+            domain_id="b344506af7644f6794d9cb316600b020",
+            group_id="123")
+
+    def test_create_role_with_str_body(self):
+        self._test_create_role()
+
+    def test_create_role_with_bytes_body(self):
+        self._test_create_role(bytes_body=True)
+
+    def test_show_role_with_str_body(self):
+        self._test_show_role()
+
+    def test_show_role_with_bytes_body(self):
+        self._test_show_role(bytes_body=True)
+
+    def test_list_roles_with_str_body(self):
+        self._test_list_roles()
+
+    def test_list_roles_with_bytes_body(self):
+        self._test_list_roles(bytes_body=True)
+
+    def test_update_role_with_str_body(self):
+        self._test_update_role()
+
+    def test_update_role_with_bytes_body(self):
+        self._test_update_role(bytes_body=True)
+
+    def test_delete_role(self):
+        self.check_service_client_function(
+            self.client.delete_role,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            role_id="1",
+            status=204)
+
+    def test_create_user_role_on_project_with_str_body(self):
+        self._test_create_user_role_on_project()
+
+    def test_create_user_role_on_project_with_bytes_body(self):
+        self._test_create_user_role_on_project(bytes_body=True)
+
+    def test_create_user_role_on_domain_with_str_body(self):
+        self._test_create_user_role_on_domain()
+
+    def test_create_user_role_on_domain_with_bytes_body(self):
+        self._test_create_user_role_on_domain(bytes_body=True)
+
+    def test_create_group_role_on_domain_with_str_body(self):
+        self._test_create_group_role_on_domain()
+
+    def test_create_group_role_on_domain_with_bytes_body(self):
+        self._test_create_group_role_on_domain(bytes_body=True)
+
+    def test_list_user_roles_on_project_with_str_body(self):
+        self._test_list_user_roles_on_project()
+
+    def test_list_user_roles_on_project_with_bytes_body(self):
+        self._test_list_user_roles_on_project(bytes_body=True)
+
+    def test_list_user_roles_on_domain_with_str_body(self):
+        self._test_list_user_roles_on_domain()
+
+    def test_list_user_roles_on_domain_with_bytes_body(self):
+        self._test_list_user_roles_on_domain(bytes_body=True)
+
+    def test_list_group_roles_on_domain_with_str_body(self):
+        self._test_list_group_roles_on_domain()
+
+    def test_list_group_roles_on_domain_with_bytes_body(self):
+        self._test_list_group_roles_on_domain(bytes_body=True)
+
+    def test_delete_role_from_user_on_project(self):
+        self.check_service_client_function(
+            self.client.delete_role_from_user_on_project,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            project_id="b344506af7644f6794d9cb316600b020",
+            user_id="123",
+            role_id="1234",
+            status=204)
+
+    def test_delete_role_from_user_on_domain(self):
+        self.check_service_client_function(
+            self.client.delete_role_from_user_on_domain,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            domain_id="b344506af7644f6794d9cb316600b020",
+            user_id="123",
+            role_id="1234",
+            status=204)
+
+    def test_delete_role_from_group_on_project(self):
+        self.check_service_client_function(
+            self.client.delete_role_from_group_on_project,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            project_id="b344506af7644f6794d9cb316600b020",
+            group_id="123",
+            role_id="1234",
+            status=204)
+
+    def test_delete_role_from_group_on_domain(self):
+        self.check_service_client_function(
+            self.client.delete_role_from_group_on_domain,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            domain_id="b344506af7644f6794d9cb316600b020",
+            group_id="123",
+            role_id="1234",
+            status=204)
+
+    def test_check_user_role_existence_on_project(self):
+        self.check_service_client_function(
+            self.client.check_user_role_existence_on_project,
+            'tempest.lib.common.rest_client.RestClient.head',
+            {},
+            project_id="b344506af7644f6794d9cb316600b020",
+            user_id="123",
+            role_id="1234",
+            status=204)
+
+    def test_check_user_role_existence_on_domain(self):
+        self.check_service_client_function(
+            self.client.check_user_role_existence_on_domain,
+            'tempest.lib.common.rest_client.RestClient.head',
+            {},
+            domain_id="b344506af7644f6794d9cb316600b020",
+            user_id="123",
+            role_id="1234",
+            status=204)
+
+    def test_check_role_from_group_on_project_existence(self):
+        self.check_service_client_function(
+            self.client.check_role_from_group_on_project_existence,
+            'tempest.lib.common.rest_client.RestClient.head',
+            {},
+            project_id="b344506af7644f6794d9cb316600b020",
+            group_id="123",
+            role_id="1234",
+            status=204)
+
+    def test_check_role_from_group_on_domain_existence(self):
+        self.check_service_client_function(
+            self.client.check_role_from_group_on_domain_existence,
+            'tempest.lib.common.rest_client.RestClient.head',
+            {},
+            domain_id="b344506af7644f6794d9cb316600b020",
+            group_id="123",
+            role_id="1234",
+            status=204)