diff --git a/overcloud.j2.yaml b/overcloud.j2.yaml
index 61a7401656..14790b6761 100644
--- a/overcloud.j2.yaml
+++ b/overcloud.j2.yaml
@@ -1040,3 +1040,6 @@ outputs:
       Environment data that can be used as input into the services stack when
       using split-stack.
     value: {get_attr: [DeployedServerEnvironment, deployed_server_environment]}
+  BlacklistedHostnames:
+    description: List of blacklisted hostnames
+    value: {get_attr: [BlacklistedHostnames, value]}
diff --git a/releasenotes/notes/blacklistedhostnames-stack-output-02c9f93f9d1ce7d8.yaml b/releasenotes/notes/blacklistedhostnames-stack-output-02c9f93f9d1ce7d8.yaml
new file mode 100644
index 0000000000..d051cd596c
--- /dev/null
+++ b/releasenotes/notes/blacklistedhostnames-stack-output-02c9f93f9d1ce7d8.yaml
@@ -0,0 +1,4 @@
+---
+other:
+  - BlacklistedHostnames has been added as a stack output. The value of the
+    output is a list of blacklisted hostnames.