diff --git a/airflow-core/src/airflow/api_fastapi/core_api/routes/public/dag_tags.py b/airflow-core/src/airflow/api_fastapi/core_api/routes/public/dag_tags.py
index b09f524c1ac6b..d31c71c89c8fe 100644
--- a/airflow-core/src/airflow/api_fastapi/core_api/routes/public/dag_tags.py
+++ b/airflow-core/src/airflow/api_fastapi/core_api/routes/public/dag_tags.py
@@ -21,7 +21,7 @@
 from typing import Annotated
 
 from fastapi import Depends
-from sqlalchemy import select
+from sqlalchemy import false, select
 
 from airflow.api_fastapi.common.db.common import (
     SessionDep,
@@ -37,7 +37,7 @@
 from airflow.api_fastapi.common.router import AirflowRouter
 from airflow.api_fastapi.core_api.datamodels.dag_tags import DAGTagCollectionResponse
 from airflow.api_fastapi.core_api.security import ReadableTagsFilterDep, requires_access_dag
-from airflow.models.dag import DagTag
+from airflow.models.dag import DagModel, DagTag
 
 dag_tags_router = AirflowRouter(tags=["DAG"], prefix="/dagTags")
 
@@ -61,7 +61,12 @@ def get_dag_tags(
     session: SessionDep,
 ) -> DAGTagCollectionResponse:
     """Get all Dag tags."""
-    query = select(DagTag.name).group_by(DagTag.name)
+    query = (
+        select(DagTag.name)
+        .join(DagModel, DagModel.dag_id == DagTag.dag_id)
+        .where(DagModel.is_stale == false())
+        .group_by(DagTag.name)
+    )
     dag_tags_select, total_entries = paginated_select(
         statement=query,
         filters=[tag_name_pattern, tag_name_prefix_pattern, readable_tags_filter],
diff --git a/airflow-core/tests/unit/api_fastapi/core_api/routes/public/test_dag_tags.py b/airflow-core/tests/unit/api_fastapi/core_api/routes/public/test_dag_tags.py
index 2692ea07ff148..62ba3ae257d2f 100644
--- a/airflow-core/tests/unit/api_fastapi/core_api/routes/public/test_dag_tags.py
+++ b/airflow-core/tests/unit/api_fastapi/core_api/routes/public/test_dag_tags.py
@@ -100,8 +100,8 @@ def _create_deactivated_paused_dag(self, session=None):
 
     def _create_dag_tags(self, session=None):
         session.add(DagTag(dag_id=DAG1_ID, name="tag_2"))
-        session.add(DagTag(dag_id=DAG2_ID, name="tag_1"))
         session.add(DagTag(dag_id=DAG3_ID, name="tag_1"))
+        session.add(DagTag(dag_id=DAG3_ID, name="stale_only"))
 
     @pytest.fixture(autouse=True)
     @provide_session
@@ -128,6 +128,7 @@ def setup(self, dag_maker, *, session=None) -> None:
             params={"foo": 1},
             max_active_tasks=16,
             max_active_runs=16,
+            tags=["tag_1"],
         ):
             EmptyOperator(task_id=TASK_ID)
 
@@ -194,6 +195,12 @@ class TestDagTags(TestDagEndpoint):
                 [],
                 0,
             ),
+            (
+                {"tag_name_pattern": "stale_only"},
+                200,
+                [],
+                0,
+            ),
             (
                 {"tag_name_pattern": "1"},
                 200,