diff --git a/airflow-core/src/airflow/partition_mappers/__init__.py b/airflow-core/src/airflow/partition_mappers/__init__.py
index f780603870736..fe2157ee98c56 100644
--- a/airflow-core/src/airflow/partition_mappers/__init__.py
+++ b/airflow-core/src/airflow/partition_mappers/__init__.py
@@ -23,6 +23,7 @@
 from airflow.partition_mappers.identity import IdentityMapper
 from airflow.partition_mappers.product import ProductMapper
 from airflow.partition_mappers.temporal import (
+    FanOutMapper,
     StartOfDayMapper,
     StartOfHourMapper,
     StartOfMonthMapper,
@@ -30,6 +31,7 @@
     StartOfWeekMapper,
     StartOfYearMapper,
 )
+from airflow.partition_mappers.wait_policy import MinimumCount, WaitForAll
 from airflow.partition_mappers.window import (
     DayWindow,
     HourWindow,
@@ -45,9 +47,11 @@
     "AllowedKeyMapper",
     "ChainMapper",
     "DayWindow",
+    "FanOutMapper",
     "FixedKeyMapper",
     "HourWindow",
     "IdentityMapper",
+    "MinimumCount",
     "MonthWindow",
     "PartitionMapper",
     "ProductMapper",
@@ -60,6 +64,7 @@
     "StartOfQuarterMapper",
     "StartOfWeekMapper",
     "StartOfYearMapper",
+    "WaitForAll",
     "WeekWindow",
     "Window",
     "YearWindow",
diff --git a/airflow-core/tests/unit/partition_mappers/test_init.py b/airflow-core/tests/unit/partition_mappers/test_init.py
new file mode 100644
index 0000000000000..e7579ec6eec11
--- /dev/null
+++ b/airflow-core/tests/unit/partition_mappers/test_init.py
@@ -0,0 +1,30 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+from __future__ import annotations
+
+import airflow.partition_mappers
+import airflow.sdk
+
+
+def test_package_root_exports_match_sdk():
+    """Every partition-mapper symbol exported from airflow.sdk must also be exported from the core package root."""
+    sdk_names = {
+        name
+        for name, module in airflow.sdk.__lazy_imports.items()
+        if module.startswith(".definitions.partition_mappers")
+    }
+    assert sdk_names == set(airflow.partition_mappers.__all__)