diff --git a/openstackclient/identity/v3/domain.py b/openstackclient/identity/v3/domain.py
index d14da48682..1233fea5e9 100644
--- a/openstackclient/identity/v3/domain.py
+++ b/openstackclient/identity/v3/domain.py
@@ -22,8 +22,10 @@ import sys
 from cliff import command
 from cliff import lister
 from cliff import show
+from keystoneclient.openstack.common.apiclient import exceptions as ksc_exc
 
 from openstackclient.common import utils
+from openstackclient.i18n import _  # noqa
 
 
 class CreateDomain(show.ShowOne):
@@ -55,16 +57,30 @@ class CreateDomain(show.ShowOne):
             dest='enabled',
             action='store_false',
             help='Disable domain')
+        parser.add_argument(
+            '--or-show',
+            action='store_true',
+            help=_('Return existing domain'),
+        )
         return parser
 
     def take_action(self, parsed_args):
         self.log.debug('take_action(%s)', parsed_args)
         identity_client = self.app.client_manager.identity
-        domain = identity_client.domains.create(
-            name=parsed_args.name,
-            description=parsed_args.description,
-            enabled=parsed_args.enabled,
-        )
+
+        try:
+            domain = identity_client.domains.create(
+                name=parsed_args.name,
+                description=parsed_args.description,
+                enabled=parsed_args.enabled,
+            )
+        except ksc_exc.Conflict as e:
+            if parsed_args.or_show:
+                domain = utils.find_resource(identity_client.domains,
+                                             parsed_args.name)
+                self.log.info('Returning existing domain %s', domain.name)
+            else:
+                raise e
 
         domain._info.pop('links')
         return zip(*sorted(six.iteritems(domain._info)))
diff --git a/openstackclient/identity/v3/group.py b/openstackclient/identity/v3/group.py
index d2ffca2733..14838bba57 100644
--- a/openstackclient/identity/v3/group.py
+++ b/openstackclient/identity/v3/group.py
@@ -22,8 +22,10 @@ import sys
 from cliff import command
 from cliff import lister
 from cliff import show
+from keystoneclient.openstack.common.apiclient import exceptions as ksc_exc
 
 from openstackclient.common import utils
+from openstackclient.i18n import _  # noqa
 from openstackclient.identity import common
 
 
@@ -122,7 +124,11 @@ class CreateGroup(show.ShowOne):
             '--domain',
             metavar='<group-domain>',
             help='References the domain ID or name which owns the group')
-
+        parser.add_argument(
+            '--or-show',
+            action='store_true',
+            help=_('Return existing group'),
+        )
         return parser
 
     def take_action(self, parsed_args):
@@ -133,10 +139,20 @@ class CreateGroup(show.ShowOne):
                                         parsed_args.domain).id
         else:
             domain = None
-        group = identity_client.groups.create(
-            name=parsed_args.name,
-            domain=domain,
-            description=parsed_args.description)
+
+        try:
+            group = identity_client.groups.create(
+                name=parsed_args.name,
+                domain=domain,
+                description=parsed_args.description)
+        except ksc_exc.Conflict as e:
+            if parsed_args.or_show:
+                group = utils.find_resource(identity_client.groups,
+                                            parsed_args.name,
+                                            domain_id=domain)
+                self.log.info('Returning existing group %s', group.name)
+            else:
+                raise e
 
         group._info.pop('links')
         return zip(*sorted(six.iteritems(group._info)))
diff --git a/openstackclient/identity/v3/project.py b/openstackclient/identity/v3/project.py
index 1cdeb15067..4fcf81278f 100644
--- a/openstackclient/identity/v3/project.py
+++ b/openstackclient/identity/v3/project.py
@@ -21,9 +21,11 @@ import six
 from cliff import command
 from cliff import lister
 from cliff import show
+from keystoneclient.openstack.common.apiclient import exceptions as ksc_exc
 
 from openstackclient.common import parseractions
 from openstackclient.common import utils
+from openstackclient.i18n import _  # noqa
 from openstackclient.identity import common
 
 
@@ -67,6 +69,11 @@ class CreateProject(show.ShowOne):
             help='Property to add for this project '
                  '(repeat option to set multiple properties)',
         )
+        parser.add_argument(
+            '--or-show',
+            action='store_true',
+            help=_('Return existing project'),
+        )
         return parser
 
     def take_action(self, parsed_args):
@@ -86,13 +93,22 @@ class CreateProject(show.ShowOne):
         if parsed_args.property:
             kwargs = parsed_args.property.copy()
 
-        project = identity_client.projects.create(
-            name=parsed_args.name,
-            domain=domain,
-            description=parsed_args.description,
-            enabled=enabled,
-            **kwargs
-        )
+        try:
+            project = identity_client.projects.create(
+                name=parsed_args.name,
+                domain=domain,
+                description=parsed_args.description,
+                enabled=enabled,
+                **kwargs
+            )
+        except ksc_exc.Conflict as e:
+            if parsed_args.or_show:
+                project = utils.find_resource(identity_client.projects,
+                                              parsed_args.name,
+                                              domain_id=domain)
+                self.log.info('Returning existing project %s', project.name)
+            else:
+                raise e
 
         project._info.pop('links')
         return zip(*sorted(six.iteritems(project._info)))
diff --git a/openstackclient/identity/v3/role.py b/openstackclient/identity/v3/role.py
index a3c24b7af6..7801ca6563 100644
--- a/openstackclient/identity/v3/role.py
+++ b/openstackclient/identity/v3/role.py
@@ -22,8 +22,10 @@ import sys
 from cliff import command
 from cliff import lister
 from cliff import show
+from keystoneclient.openstack.common.apiclient import exceptions as ksc_exc
 
 from openstackclient.common import utils
+from openstackclient.i18n import _  # noqa
 
 
 class AddRole(command.Command):
@@ -149,13 +151,26 @@ class CreateRole(show.ShowOne):
             metavar='<role-name>',
             help='New role name',
         )
+        parser.add_argument(
+            '--or-show',
+            action='store_true',
+            help=_('Return existing role'),
+        )
         return parser
 
     def take_action(self, parsed_args):
         self.log.debug('take_action(%s)', parsed_args)
         identity_client = self.app.client_manager.identity
 
-        role = identity_client.roles.create(name=parsed_args.name)
+        try:
+            role = identity_client.roles.create(name=parsed_args.name)
+        except ksc_exc.Conflict as e:
+            if parsed_args.or_show:
+                role = utils.find_resource(identity_client.roles,
+                                           parsed_args.name)
+                self.log.info('Returning existing role %s', role.name)
+            else:
+                raise e
 
         role._info.pop('links')
         return zip(*sorted(six.iteritems(role._info)))
diff --git a/openstackclient/identity/v3/user.py b/openstackclient/identity/v3/user.py
index 9a3e00b83a..63dd3b4f58 100644
--- a/openstackclient/identity/v3/user.py
+++ b/openstackclient/identity/v3/user.py
@@ -21,8 +21,10 @@ import six
 from cliff import command
 from cliff import lister
 from cliff import show
+from keystoneclient.openstack.common.apiclient import exceptions as ksc_exc
 
 from openstackclient.common import utils
+from openstackclient.i18n import _  # noqa
 from openstackclient.identity import common
 
 
@@ -80,6 +82,11 @@ class CreateUser(show.ShowOne):
             action='store_true',
             help='Disable user',
         )
+        parser.add_argument(
+            '--or-show',
+            action='store_true',
+            help=_('Return existing user'),
+        )
         return parser
 
     def take_action(self, parsed_args):
@@ -106,15 +113,24 @@ class CreateUser(show.ShowOne):
         if parsed_args.password_prompt:
             parsed_args.password = utils.get_password(self.app.stdin)
 
-        user = identity_client.users.create(
-            name=parsed_args.name,
-            domain=domain_id,
-            default_project=project_id,
-            password=parsed_args.password,
-            email=parsed_args.email,
-            description=parsed_args.description,
-            enabled=enabled
-        )
+        try:
+            user = identity_client.users.create(
+                name=parsed_args.name,
+                domain=domain_id,
+                default_project=project_id,
+                password=parsed_args.password,
+                email=parsed_args.email,
+                description=parsed_args.description,
+                enabled=enabled
+            )
+        except ksc_exc.Conflict as e:
+            if parsed_args.or_show:
+                user = utils.find_resource(identity_client.users,
+                                           parsed_args.name,
+                                           domain_id=domain_id)
+                self.log.info('Returning existing user %s', user.name)
+            else:
+                raise e
 
         user._info.pop('links')
         return zip(*sorted(six.iteritems(user._info)))