diff --git a/nova/conf/glance.py b/nova/conf/glance.py
index 61693b5a5b..c0f456b1be 100644
--- a/nova/conf/glance.py
+++ b/nova/conf/glance.py
@@ -47,6 +47,14 @@ an image to / from glance. 0 means no retries.
 """),
     cfg.ListOpt('allowed_direct_url_schemes',
         default=[],
+        deprecated_for_removal=True,
+        deprecated_since='17.0.0',
+        deprecated_reason="""
+This was originally added for the 'nova.image.download.file' FileTransfer
+extension which was removed in the 16.0.0 Pike release. The
+'nova.image.download.modules' extension point is not maintained
+and there is no indication of its use in production clouds.
+""",
         help="""
 List of url schemes that can be directly accessed.
 
diff --git a/nova/image/download/__init__.py b/nova/image/download/__init__.py
index 0b5d3453d7..ae6542cade 100644
--- a/nova/image/download/__init__.py
+++ b/nova/image/download/__init__.py
@@ -41,4 +41,14 @@ def load_transfer_modules():
             else:
                 module_dictionary[scheme] = mgr.driver
 
+    if module_dictionary:
+        LOG.warning('The nova.image.download.modules extension point is '
+                    'deprecated for removal starting in the 17.0.0 Queens '
+                    'release and may be removed as early as the 18.0.0 Rocky '
+                    'release. It is not maintained and there is no indication '
+                    'of its use in production clouds. If you are using this '
+                    'extension point, please make the nova development team '
+                    'aware by contacting us in the #openstack-nova freenode '
+                    'IRC channel or on the openstack-dev mailing list.')
+
     return module_dictionary
diff --git a/releasenotes/notes/deprecate-image-download-ext-point-cd5809e11bbd09d3.yaml b/releasenotes/notes/deprecate-image-download-ext-point-cd5809e11bbd09d3.yaml
new file mode 100644
index 0000000000..ae73ae1f5a
--- /dev/null
+++ b/releasenotes/notes/deprecate-image-download-ext-point-cd5809e11bbd09d3.yaml
@@ -0,0 +1,12 @@
+---
+deprecations:
+  - |
+    The ``[glance]/allowed_direct_url_schemes`` configuration option and
+    ``nova.image.download.modules`` extension point have been deprecated for
+    removal. These were originally added for the *nova.image.download.file*
+    FileTransfer extension which was removed in the 16.0.0 Pike release. The
+    ``nova.image.download.modules`` extension point is not maintained
+    and there is no indication of its use in production clouds. If you are
+    using this extension point, please make the nova development team
+    aware by contacting us in the #openstack-nova freenode IRC channel or
+    on the openstack-dev mailing list.