diff --git a/oslo_policy/generator.py b/oslo_policy/generator.py
index bd753896..9e283d9e 100644
--- a/oslo_policy/generator.py
+++ b/oslo_policy/generator.py
@@ -315,6 +315,11 @@ def _list_redundant(namespace):
     in a policy file and operators should consider removing them.
     """
     enforcer = _get_enforcer(namespace)
+    # NOTE(bnemec): We don't want to see policy deprecation warnings in the
+    # output of this tool. They tend to overwhelm the output that the user
+    # actually cares about, and checking for deprecations isn't the purpose of
+    # this tool.
+    enforcer.suppress_deprecation_warnings = True
     # Ensure that files have been parsed
     enforcer.load_rules()
 
diff --git a/oslo_policy/tests/test_generator.py b/oslo_policy/tests/test_generator.py
index 18c54065..a0beeaee 100644
--- a/oslo_policy/tests/test_generator.py
+++ b/oslo_policy/tests/test_generator.py
@@ -564,7 +564,8 @@ class ListRedundantTestCase(base.PolicyBaseTestCase):
     def setUp(self):
         super(ListRedundantTestCase, self).setUp()
 
-    def test_matched_rules(self):
+    @mock.patch('warnings.warn')
+    def test_matched_rules(self, mock_warn):
         extensions = []
         for name, opts in OPTS.items():
             ext = stevedore.extension.Extension(name=name, entry_point=None,
@@ -587,7 +588,13 @@ class ListRedundantTestCase(base.PolicyBaseTestCase):
         enforcer.register_default(
             policy.RuleDefault('owner', 'project_id:%(project_id)s'))
         # register a new opt
-        enforcer.register_default(policy.RuleDefault('foo', 'role:foo'))
+        deprecated_rule = policy.DeprecatedRule('old_foo', 'role:bar')
+        enforcer.register_default(
+            policy.RuleDefault('foo', 'role:foo',
+                               deprecated_rule=deprecated_rule,
+                               deprecated_reason='reason',
+                               deprecated_since='T')
+            )
 
         # Mock out stevedore to return the configured enforcer
         ext = stevedore.extension.Extension(name='testing', entry_point=None,
@@ -618,6 +625,9 @@ class ListRedundantTestCase(base.PolicyBaseTestCase):
         self.assertEqual('"owner"', opt1[0])
         self.assertEqual('"project_id:%(project_id)s"', opt1[1])
 
+        self.assertFalse(mock_warn.called,
+                         'Deprecation warnings not suppressed.')
+
 
 class UpgradePolicyTestCase(base.PolicyBaseTestCase):
     def setUp(self):
diff --git a/releasenotes/notes/list-redundant-deprecation-warnings-f84a06133efdaedd.yaml b/releasenotes/notes/list-redundant-deprecation-warnings-f84a06133efdaedd.yaml
new file mode 100644
index 00000000..5f321b26
--- /dev/null
+++ b/releasenotes/notes/list-redundant-deprecation-warnings-f84a06133efdaedd.yaml
@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Deprecated policy warnings are now suppressed in the
+    ``oslopolicy-list-redundant`` tool so that they don't overwhelm the
+    relevant output.