diff --git a/recipe_modules/abandon_old_changes/__init__.py b/recipe_modules/abandon_old_changes/__init__.py
new file mode 100644
index 0000000..17722ab
--- /dev/null
+++ b/recipe_modules/abandon_old_changes/__init__.py
@@ -0,0 +1,25 @@
+# Copyright 2024 The Pigweed Authors
+#
+# Licensed 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
+#
+#     https://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.
+
+# pylint: disable=missing-docstring
+
+from __future__ import annotations
+
+DEPS = [
+    'fuchsia/gerrit',
+    'recipe_engine/buildbucket',
+    'recipe_engine/futures',
+    'recipe_engine/json',
+    'recipe_engine/step',
+]
diff --git a/recipe_modules/abandon_old_changes/api.py b/recipe_modules/abandon_old_changes/api.py
new file mode 100644
index 0000000..2c0c12d
--- /dev/null
+++ b/recipe_modules/abandon_old_changes/api.py
@@ -0,0 +1,87 @@
+# Copyright 2024 The Pigweed Authors
+#
+# Licensed 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
+#
+#     https://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.
+"""Abandon old changes owned by the current service account."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from recipe_engine import recipe_api
+
+if TYPE_CHECKING:  # pragma: no cover
+    from recipe_engine import config_types, engine_types
+
+
+class AbandonOldChangesApi(recipe_api.RecipeApi):
+    """Abandon old changes owned by the current service account."""
+
+    def __call__(
+        self,
+        *,
+        host: str,
+        age_days: int = 30,
+        continue_on_failure: bool = True,
+        max_to_abandon: int = 10,
+    ):
+        with self.m.step.nest('abandon old changes'):
+            try:
+                self._abandon_old_changes(
+                    host=self.m.gerrit.host_from_remote_url(host),
+                    age_days=age_days,
+                    max_to_abandon=max_to_abandon,
+                )
+                self.m.step.empty('success')
+
+            except self.m.step.StepFailure:
+                self.m.step.empty('failure')
+                if not continue_on_failure:
+                    raise  # pragma: no cover
+
+    def _abandon_old_changes(
+        self,
+        *,
+        host: str,
+        age_days: int,
+        max_to_abandon: int,
+    ):
+        query_string = (
+            f'is:open '
+            f'owner:{self.m.buildbucket.build.infra.swarming.task_service_account} '
+            f'age:{age_days}d '
+        )
+
+        changes = self.m.gerrit.change_query(
+            name='get old changes',
+            query_string=query_string,
+            host=host,
+            max_attempts=1,
+            timeout=30,
+            test_data=self.m.json.test_api.output(
+                [
+                    {'_number': 1001},
+                    {'_number': 1002},
+                ],
+            ),
+        ).json.output
+
+        futures = []
+        for change in changes[:max_to_abandon]:
+            self.m.futures.spawn(
+                self.m.gerrit.abandon,
+                f'abandon {change["_number"]}',
+                change['_number'],
+                'Abandoning orphaned roll change.',
+            )
+
+        self.m.futures.wait(futures)
diff --git a/recipe_modules/abandon_old_changes/tests/full.py b/recipe_modules/abandon_old_changes/tests/full.py
new file mode 100644
index 0000000..d0137c9
--- /dev/null
+++ b/recipe_modules/abandon_old_changes/tests/full.py
@@ -0,0 +1,72 @@
+# Copyright 2024 The Pigweed Authors
+#
+# Licensed 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
+#
+#     https://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.
+"""Full test of abandon_old_changes module."""
+
+from __future__ import annotations
+
+from typing import Generator, TYPE_CHECKING
+
+from recipe_engine import post_process
+
+if TYPE_CHECKING:  # pragma: no cover
+    from recipe_engine import recipe_test_api
+
+DEPS = [
+    'fuchsia/buildbucket_util',
+    'pigweed/abandon_old_changes',
+]
+
+
+def RunSteps(api):
+    api.abandon_old_changes(host='pigweed')
+
+
+def GenTests(api) -> Generator[recipe_test_api.TestData, None, None]:
+    yield api.buildbucket_util.test(
+        'success',
+        api.post_process(
+            post_process.MustRun,
+            'abandon old changes.abandon 1001',
+        ),
+        api.post_process(
+            post_process.MustRun,
+            'abandon old changes.abandon 1002',
+        ),
+        api.post_process(
+            post_process.MustRun,
+            'abandon old changes.success',
+        ),
+        api.post_process(
+            post_process.DoesNotRun,
+            'abandon old changes.failure',
+        ),
+        api.post_process(post_process.DropExpectation),
+    )
+
+    yield api.buildbucket_util.test(
+        'failure',
+        api.override_step_data(
+            'abandon old changes.get old changes',
+            retcode=1,
+        ),
+        api.post_process(
+            post_process.DoesNotRun,
+            'abandon old changes.success',
+        ),
+        api.post_process(
+            post_process.MustRun,
+            'abandon old changes.failure',
+        ),
+        api.post_process(post_process.DropExpectation),
+    )