diff --git a/defaults/main.yml b/defaults/main.yml
index 7f68269b..071dbcec 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -252,3 +252,6 @@ horizon_role_project_group: horizon_all
 
 # Set arbitrary horizon configuration options
 horizon_config_overrides: {}
+
+horizon_keystone_admin_roles:
+  - admin
diff --git a/releasenotes/notes/add-keystone-admin-roles-setting-83198a721c64ee3c.yaml b/releasenotes/notes/add-keystone-admin-roles-setting-83198a721c64ee3c.yaml
new file mode 100644
index 00000000..ec2f586d
--- /dev/null
+++ b/releasenotes/notes/add-keystone-admin-roles-setting-83198a721c64ee3c.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - The ``horizon_keystone_admin_roles`` variable is added to support the
+    ``OPENSTACK_KEYSTONE_ADMIN_ROLES`` list in the horizon_local_settings.py
+    file.
diff --git a/templates/horizon_local_settings.py.j2 b/templates/horizon_local_settings.py.j2
index 85b2a4e7..bdf528ea 100644
--- a/templates/horizon_local_settings.py.j2
+++ b/templates/horizon_local_settings.py.j2
@@ -738,3 +738,9 @@ DEFAULT_THEME = '{{ horizon_default_theme }}'
 
 # Set arbitrary horizon configuration options
 HORIZON_CONFIG.update({{ horizon_config_overrides }})
+
+OPENSTACK_KEYSTONE_ADMIN_ROLES = [
+{% for item in horizon_keystone_admin_roles %}
+  '{{ item }}',
+{% endfor %}
+]