diff --git a/neutron_lib/exceptions/l3.py b/neutron_lib/exceptions/l3.py
index 4ed192f6c..cfd466573 100644
--- a/neutron_lib/exceptions/l3.py
+++ b/neutron_lib/exceptions/l3.py
@@ -77,6 +77,11 @@ class RouterNotCompatibleWithAgent(exceptions.NeutronException):
     message = _("Router '%(router_id)s' is not compatible with this agent.")
 
 
+class RouterNotFoundInRouterFactory(exceptions.NeutronException):
+    message = _("Router '%(router_id)s' with features '%(features)s' could "
+                "not be found in the router factory.")
+
+
 class FloatingIpSetupException(exceptions.NeutronException):
     def __init__(self, message=None):
         self.message = message
diff --git a/releasenotes/notes/add-router-not-found-in-factory-exception-e2bf9431549ff9b9.yaml b/releasenotes/notes/add-router-not-found-in-factory-exception-e2bf9431549ff9b9.yaml
new file mode 100644
index 000000000..62f533a26
--- /dev/null
+++ b/releasenotes/notes/add-router-not-found-in-factory-exception-e2bf9431549ff9b9.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - Adds new L3 exception ``RouterNotFoundInRouterFactory`` in
+    ``neutron_lib.exceptions.l3``.