diff --git a/nova/conf/glance.py b/nova/conf/glance.py
index b96f437b0f36..18c50dd9f70f 100644
--- a/nova/conf/glance.py
+++ b/nova/conf/glance.py
@@ -29,6 +29,14 @@ glance_opts = [
     # NOTE(sdague/efried): there is intentionally no default here. This
     # requires configuration if ksa adapter config is not used.
     cfg.ListOpt('api_servers',
+        deprecated_for_removal=True,
+        deprecated_since='21.0.0',
+        deprecated_reason="""
+Support for image service configuration via standard keystoneauth1 Adapter
+options was added in the 17.0.0 Queens release. The api_servers option was
+retained temporarily to allow consumers time to cut over to a real load
+balancing solution.
+""",
         help="""
 List of glance api servers endpoints available to nova.
 
diff --git a/releasenotes/notes/deprecate-glance-api_servers-d05695ea52b831e0.yaml b/releasenotes/notes/deprecate-glance-api_servers-d05695ea52b831e0.yaml
new file mode 100644
index 000000000000..3b31ed6c4c7d
--- /dev/null
+++ b/releasenotes/notes/deprecate-glance-api_servers-d05695ea52b831e0.yaml
@@ -0,0 +1,8 @@
+---
+deprecations:
+  - |
+    The ``[glance]api_servers`` configuration option is deprecated and will be
+    removed in a future release. Deployments should use standard keystoneauth1
+    options to configure communication with a single image service endpoint.
+    Any load balancing or high availability requirements should be satisfied
+    outside of nova.