diff --git a/authentik/core/models.py b/authentik/core/models.py
index 5b1e4076c7..413fa09c95 100644
--- a/authentik/core/models.py
+++ b/authentik/core/models.py
@@ -632,7 +632,7 @@ class UserSourceConnection(SerializerModel, CreatedUpdatedModel):
         raise NotImplementedError
 
     def __str__(self) -> str:
-        return f"User-source connection (user={self.user.username}, source={self.source.slug})"
+        return f"User-source connection (user={self.user_id}, source={self.source_id})"
 
     class Meta:
         unique_together = (("user", "source"),)
diff --git a/authentik/enterprise/providers/rac/models.py b/authentik/enterprise/providers/rac/models.py
index 5c6e835c61..c74790de3d 100644
--- a/authentik/enterprise/providers/rac/models.py
+++ b/authentik/enterprise/providers/rac/models.py
@@ -201,10 +201,7 @@ class ConnectionToken(ExpiringModel):
         return settings
 
     def __str__(self):
-        return (
-            f"RAC Connection token {self.session.user} to "
-            f"{self.endpoint.provider.name}/{self.endpoint.name}"
-        )
+        return f"RAC Connection token {self.session_id} to {self.provider_id}/{self.endpoint_id}"
 
     class Meta:
         verbose_name = _("RAC Connection token")
diff --git a/authentik/events/models.py b/authentik/events/models.py
index bea93dccd3..92d934c55b 100644
--- a/authentik/events/models.py
+++ b/authentik/events/models.py
@@ -556,7 +556,7 @@ class Notification(SerializerModel):
             if len(self.body) > NOTIFICATION_SUMMARY_LENGTH
             else self.body
         )
-        return f"Notification for user {self.user}: {body_trunc}"
+        return f"Notification for user {self.user_id}: {body_trunc}"
 
     class Meta:
         verbose_name = _("Notification")
diff --git a/authentik/events/tests/test_models.py b/authentik/events/tests/test_models.py
new file mode 100644
index 0000000000..9be7b8b392
--- /dev/null
+++ b/authentik/events/tests/test_models.py
@@ -0,0 +1,35 @@
+"""authentik event models tests"""
+
+from collections.abc import Callable
+
+from django.db.models import Model
+from django.test import TestCase
+
+from authentik.core.models import default_token_key
+from authentik.lib.utils.reflection import get_apps
+
+
+class TestModels(TestCase):
+    """Test Models"""
+
+
+def model_tester_factory(test_model: type[Model]) -> Callable:
+    """Test models' __str__ and __repr__"""
+
+    def tester(self: TestModels):
+        allowed = 0
+        # Token-like objects need to lookup the current tenant to get the default token length
+        for field in test_model._meta.fields:
+            if field.default == default_token_key:
+                allowed += 1
+        with self.assertNumQueries(allowed):
+            str(test_model())
+        with self.assertNumQueries(allowed):
+            repr(test_model())
+
+    return tester
+
+
+for app in get_apps():
+    for model in app.get_models():
+        setattr(TestModels, f"test_{app.label}_{model.__name__}", model_tester_factory(model))
diff --git a/authentik/providers/oauth2/models.py b/authentik/providers/oauth2/models.py
index 3e7f00bcf7..d9029e1158 100644
--- a/authentik/providers/oauth2/models.py
+++ b/authentik/providers/oauth2/models.py
@@ -326,7 +326,7 @@ class AuthorizationCode(SerializerModel, ExpiringModel, BaseGrantModel):
         verbose_name_plural = _("Authorization Codes")
 
     def __str__(self):
-        return f"Authorization code for {self.provider} for user {self.user}"
+        return f"Authorization code for {self.provider_id} for user {self.user_id}"
 
     @property
     def serializer(self) -> Serializer:
@@ -356,7 +356,7 @@ class AccessToken(SerializerModel, ExpiringModel, BaseGrantModel):
         verbose_name_plural = _("OAuth2 Access Tokens")
 
     def __str__(self):
-        return f"Access Token for {self.provider} for user {self.user}"
+        return f"Access Token for {self.provider_id} for user {self.user_id}"
 
     @property
     def id_token(self) -> IDToken:
@@ -399,7 +399,7 @@ class RefreshToken(SerializerModel, ExpiringModel, BaseGrantModel):
         verbose_name_plural = _("OAuth2 Refresh Tokens")
 
     def __str__(self):
-        return f"Refresh Token for {self.provider} for user {self.user}"
+        return f"Refresh Token for {self.provider_id} for user {self.user_id}"
 
     @property
     def id_token(self) -> IDToken:
@@ -443,4 +443,4 @@ class DeviceToken(ExpiringModel):
         verbose_name_plural = _("Device Tokens")
 
     def __str__(self):
-        return f"Device Token for {self.provider}"
+        return f"Device Token for {self.provider_id}"
diff --git a/authentik/providers/scim/models.py b/authentik/providers/scim/models.py
index e078eead4c..e85d796a79 100644
--- a/authentik/providers/scim/models.py
+++ b/authentik/providers/scim/models.py
@@ -105,7 +105,7 @@ class SCIMUser(models.Model):
         unique_together = (("id", "user", "provider"),)
 
     def __str__(self) -> str:
-        return f"SCIM User {self.user.username} to {self.provider.name}"
+        return f"SCIM User {self.user_id} to {self.provider_id}"
 
 
 class SCIMGroup(models.Model):
@@ -119,4 +119,4 @@ class SCIMGroup(models.Model):
         unique_together = (("id", "group", "provider"),)
 
     def __str__(self) -> str:
-        return f"SCIM Group {self.group.name} to {self.provider.name}"
+        return f"SCIM Group {self.group_id} to {self.provider_id}"
diff --git a/authentik/sources/scim/models.py b/authentik/sources/scim/models.py
index 6669b46004..4684c4dfa8 100644
--- a/authentik/sources/scim/models.py
+++ b/authentik/sources/scim/models.py
@@ -60,7 +60,7 @@ class SCIMSourceUser(SerializerModel):
         unique_together = (("id", "user", "source"),)
 
     def __str__(self) -> str:
-        return f"SCIM User {self.user.username} to {self.source.name}"
+        return f"SCIM User {self.user_id} to {self.source_id}"
 
 
 class SCIMSourceGroup(SerializerModel):
@@ -81,4 +81,4 @@ class SCIMSourceGroup(SerializerModel):
         unique_together = (("id", "group", "source"),)
 
     def __str__(self) -> str:
-        return f"SCIM Group {self.group.name} to {self.source.name}"
+        return f"SCIM Group {self.group_id} to {self.source_id}"
diff --git a/authentik/stages/authenticator_duo/models.py b/authentik/stages/authenticator_duo/models.py
index 37e2f6714c..f9726021d4 100644
--- a/authentik/stages/authenticator_duo/models.py
+++ b/authentik/stages/authenticator_duo/models.py
@@ -96,7 +96,7 @@ class DuoDevice(SerializerModel, Device):
         return DuoDeviceSerializer
 
     def __str__(self):
-        return str(self.name) or str(self.user)
+        return str(self.name) or str(self.user_id)
 
     class Meta:
         verbose_name = _("Duo Device")
diff --git a/authentik/stages/authenticator_sms/models.py b/authentik/stages/authenticator_sms/models.py
index 36b3dd5370..82ad6f61ee 100644
--- a/authentik/stages/authenticator_sms/models.py
+++ b/authentik/stages/authenticator_sms/models.py
@@ -221,7 +221,7 @@ class SMSDevice(SerializerModel, SideChannelDevice):
         return valid
 
     def __str__(self):
-        return str(self.name) or str(self.user)
+        return str(self.name) or str(self.user_id)
 
     class Meta:
         verbose_name = _("SMS Device")
diff --git a/authentik/stages/authenticator_webauthn/models.py b/authentik/stages/authenticator_webauthn/models.py
index 5a45b34316..fc0e7f6867 100644
--- a/authentik/stages/authenticator_webauthn/models.py
+++ b/authentik/stages/authenticator_webauthn/models.py
@@ -155,7 +155,7 @@ class WebAuthnDevice(SerializerModel, Device):
         return WebAuthnDeviceSerializer
 
     def __str__(self):
-        return str(self.name) or str(self.user)
+        return str(self.name) or str(self.user_id)
 
     class Meta:
         verbose_name = _("WebAuthn Device")
diff --git a/authentik/stages/consent/models.py b/authentik/stages/consent/models.py
index 385aaf8921..b180082e60 100644
--- a/authentik/stages/consent/models.py
+++ b/authentik/stages/consent/models.py
@@ -65,7 +65,7 @@ class UserConsent(SerializerModel, ExpiringModel):
         return UserConsentSerializer
 
     def __str__(self):
-        return f"User Consent {self.application} by {self.user}"
+        return f"User Consent {self.application_id} by {self.user_id}"
 
     class Meta:
         unique_together = (("user", "application", "permissions"),)
diff --git a/authentik/stages/invitation/models.py b/authentik/stages/invitation/models.py
index 831effcedc..b1ead478f5 100644
--- a/authentik/stages/invitation/models.py
+++ b/authentik/stages/invitation/models.py
@@ -79,7 +79,7 @@ class Invitation(SerializerModel, ExpiringModel):
         return InvitationSerializer
 
     def __str__(self):
-        return f"Invitation {str(self.invite_uuid)} created by {self.created_by}"
+        return f"Invitation {str(self.invite_uuid)} created by {self.created_by_id}"
 
     class Meta:
         verbose_name = _("Invitation")