diff --git a/gerrit/acls/openstack/castellan-ui.config b/gerrit/acls/openstack/castellan-ui.config
deleted file mode 100644
index 6038b253d2..0000000000
--- a/gerrit/acls/openstack/castellan-ui.config
+++ /dev/null
@@ -1,11 +0,0 @@
-[access "refs/heads/*"]
-abandon = group castellan-ui-core
-label-Code-Review = -2..+2 group castellan-ui-core
-label-Workflow = -1..+1 group castellan-ui-core
-
-[receive]
-requireChangeId = true
-requireContributorAgreement = true
-
-[submit]
-mergeContent = true
diff --git a/gerrit/projects.yaml b/gerrit/projects.yaml
index 491d675c99..4bae11561d 100644
--- a/gerrit/projects.yaml
+++ b/gerrit/projects.yaml
@@ -1164,10 +1164,8 @@
 - project: openstack/castellan
   description: Generic Key Manager interface for OpenStack
 - project: openstack/castellan-ui
-  use-storyboard: true
-  description: Generic Key Manager interface UI plugin for Horizon
-  groups:
-    - barbican
+  description: RETIRED, Generic Key Manager interface UI plugin for Horizon
+  acl-config: /home/gerrit2/acls/openstack/retired.config
 - project: openstack/ceilometer
   description: OpenStack Telemetry (Ceilometer)
   use-storyboard: true
diff --git a/zuul.d/projects.yaml b/zuul.d/projects.yaml
index 61afa89f47..a22fc1566c 100644
--- a/zuul.d/projects.yaml
+++ b/zuul.d/projects.yaml
@@ -1715,11 +1715,6 @@
     templates:
       - publish-to-pypi
 
-- project:
-    name: openstack/castellan-ui
-    templates:
-      - noop-jobs
-
 - project:
     name: openstack/ceilometer
     templates:
diff --git a/zuul/main.yaml b/zuul/main.yaml
index a7405b58d6..75bbc638c0 100644
--- a/zuul/main.yaml
+++ b/zuul/main.yaml
@@ -294,7 +294,6 @@
           - openstack/blazar-tempest-plugin
           - openstack/bugdaystats
           - openstack/castellan
-          - openstack/castellan-ui
           - openstack/ceilometer
           - openstack/ceilometer-powervm
           - openstack/ceilometermiddleware