diff --git a/pandas/core/indexes/timedeltas.py b/pandas/core/indexes/timedeltas.py
index 6bbe86816d81f..fa3de46621643 100644
--- a/pandas/core/indexes/timedeltas.py
+++ b/pandas/core/indexes/timedeltas.py
@@ -237,6 +237,7 @@ def inferred_type(self) -> str:
         return "timedelta64"
 
 
+@set_module("pandas")
 def timedelta_range(
     start=None,
     end=None,
diff --git a/pandas/tests/api/test_api.py b/pandas/tests/api/test_api.py
index 2a96ef35c981c..acb4809791394 100644
--- a/pandas/tests/api/test_api.py
+++ b/pandas/tests/api/test_api.py
@@ -420,6 +420,7 @@ def test_set_module():
     assert pd.Series.__module__ == "pandas"
     assert pd.date_range.__module__ == "pandas"
     assert pd.bdate_range.__module__ == "pandas"
+    assert pd.timedelta_range.__module__ == "pandas"
     assert pd.NamedAgg.__module__ == "pandas"
     assert api.typing.SeriesGroupBy.__module__ == "pandas.api.typing"
     assert api.typing.DataFrameGroupBy.__module__ == "pandas.api.typing"