diff --git a/src/aap_eda/api/filters/credential_type.py b/src/aap_eda/api/filters/credential_type.py
index 7719cb39a..2eb469cac 100644
--- a/src/aap_eda/api/filters/credential_type.py
+++ b/src/aap_eda/api/filters/credential_type.py
@@ -20,7 +20,7 @@
 class CredentialTypeFilter(django_filters.FilterSet):
     name = django_filters.CharFilter(
         field_name="name",
-        lookup_expr="istartswith",
+        lookup_expr="icontains",
         label="Filter by credential type name.",
     )
     namespace = django_filters.CharFilter(
diff --git a/tests/integration/api/test_credential_type.py b/tests/integration/api/test_credential_type.py
index 797517f42..460fec463 100644
--- a/tests/integration/api/test_credential_type.py
+++ b/tests/integration/api/test_credential_type.py
@@ -527,6 +527,31 @@ def test_list_credential_types(superuser_client: APIClient):
     assert len(objects) == 2
 
 
+@pytest.mark.django_db
+def test_list_credential_types_filter_name_contains(
+    admin_client: APIClient,
+    aap_credential_type,
+):
+    """Name filter is a case-insensitive substring match (AAP-81333)."""
+    response = admin_client.get(f"{api_url_v1}/credential-types/?name=Ansible")
+    assert response.status_code == status.HTTP_200_OK
+    names = [item["name"] for item in response.json()["results"]]
+    assert aap_credential_type.name in names
+    assert enums.DefaultCredentialType.AAP in names
+
+    prefix_response = admin_client.get(
+        f"{api_url_v1}/credential-types/?name=Red Hat"
+    )
+    prefix_names = [item["name"] for item in prefix_response.json()["results"]]
+    assert aap_credential_type.name in prefix_names
+
+    empty_response = admin_client.get(
+        f"{api_url_v1}/credential-types/?name=does-not-exist"
+    )
+    assert empty_response.status_code == status.HTTP_200_OK
+    assert empty_response.json()["results"] == []
+
+
 @pytest.mark.django_db
 def test_delete_managed_credential_type(superuser_client: APIClient):
     obj = models.CredentialType.objects.create(