diff --git a/changelogs/fragments/os_router_enable_snat_fix.yaml b/changelogs/fragments/os_router_enable_snat_fix.yaml
new file mode 100644
index 0000000000..bb4aa705b7
--- /dev/null
+++ b/changelogs/fragments/os_router_enable_snat_fix.yaml
@@ -0,0 +1,5 @@
+---
+bugfixes:
+  - Fixed an issue where ``os_router`` would attempt to recreate router,
+    because lack of ``enabled_snat`` parameter was treated as difference,
+    if default Neutron policy for snat is set. (https://github.com/ansible/ansible/issues/29903)
diff --git a/lib/ansible/modules/cloud/openstack/os_router.py b/lib/ansible/modules/cloud/openstack/os_router.py
index 643215028b..44ec4462c2 100644
--- a/lib/ansible/modules/cloud/openstack/os_router.py
+++ b/lib/ansible/modules/cloud/openstack/os_router.py
@@ -227,8 +227,10 @@ def _needs_update(cloud, module, router, network, internal_subnet_ids, internal_
     if router['admin_state_up'] != module.params['admin_state_up']:
         return True
     if router['external_gateway_info']:
-        if router['external_gateway_info'].get('enable_snat', True) != module.params['enable_snat']:
-            return True
+        # check if enable_snat is set in module params
+        if module.params['enable_snat'] is not None:
+            if router['external_gateway_info'].get('enable_snat', True) != module.params['enable_snat']:
+                return True
     if network:
         if not router['external_gateway_info']:
             return True