diff --git a/netbox_routing/migrations/0017_eigrprouter_netbox_routing_eigrprouter_unique_device_name_and_more.py b/netbox_routing/migrations/0017_eigrprouter_netbox_routing_eigrprouter_unique_device_name_and_more.py
new file mode 100644
index 0000000..6ddbc2c
--- /dev/null
+++ b/netbox_routing/migrations/0017_eigrprouter_netbox_routing_eigrprouter_unique_device_name_and_more.py
@@ -0,0 +1,33 @@
+# Generated by Django 5.2.2 on 2025-10-30 08:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('netbox_routing', '0016_ospfinterface_interface_onetoonefield'),
+    ]
+
+    operations = [
+        migrations.AddConstraint(
+            model_name='eigrprouter',
+            constraint=models.UniqueConstraint(
+                fields=('device', 'name'),
+                name='netbox_routing_eigrprouter_unique_device_name',
+                nulls_distinct=False,
+                violation_error_message="""Name must be unique per device.\n
+                Only a single empty name is permitted per device""",
+            ),
+        ),
+        migrations.AddConstraint(
+            model_name='ospfinstance',
+            constraint=models.UniqueConstraint(
+                fields=('device', 'name'),
+                name='netbox_routing_ospfinstance_unique_device_name',
+                nulls_distinct=False,
+                violation_error_message="""Name must be unique per device.\n
+                Only a single empty name is permitted per device""",
+            ),
+        ),
+    ]
diff --git a/netbox_routing/models/eigrp.py b/netbox_routing/models/eigrp.py
index dd199ab..8fd66eb 100644
--- a/netbox_routing/models/eigrp.py
+++ b/netbox_routing/models/eigrp.py
@@ -38,6 +38,15 @@ class EIGRPRouter(PrimaryModel):
 
     class Meta:
         verbose_name = 'EIGRP Router'
+        constraints = (
+            models.UniqueConstraint(
+                fields=('device', 'name'),
+                name='%(app_label)s_%(class)s_unique_device_name',
+                violation_error_message="""Name must be unique per device.
+                Only a single empty name is permitted per device""",
+                nulls_distinct=False,
+            ),
+        )
 
     def __str__(self):
         if self.pid:
diff --git a/netbox_routing/models/ospf.py b/netbox_routing/models/ospf.py
index aa13587..a77c960 100644
--- a/netbox_routing/models/ospf.py
+++ b/netbox_routing/models/ospf.py
@@ -44,6 +44,15 @@ class OSPFInstance(PrimaryModel):
     class Meta:
         ordering = ['vrf', 'router_id', 'process_id']
         verbose_name = 'OSPF Instance'
+        constraints = (
+            models.UniqueConstraint(
+                fields=('device', 'name'),
+                name='%(app_label)s_%(class)s_unique_device_name',
+                violation_error_message="""Name must be unique per device.
+                Only a single empty name is permitted per device""",
+                nulls_distinct=False,
+            ),
+        )
 
     def __str__(self):
         return f'{self.name} ({self.router_id})'