diff --git a/google/cloud/bigquery/_pyarrow_helpers.py b/google/cloud/bigquery/_pyarrow_helpers.py
index 7266e5e02..946743eaf 100644
--- a/google/cloud/bigquery/_pyarrow_helpers.py
+++ b/google/cloud/bigquery/_pyarrow_helpers.py
@@ -91,6 +91,7 @@ def pyarrow_timestamp():
         pyarrow.date64().id: "DATETIME",  # because millisecond resolution
         pyarrow.binary().id: "BYTES",
         pyarrow.string().id: "STRING",  # also alias for pyarrow.utf8()
+        pyarrow.large_string().id: "STRING",
         # The exact scale and precision don't matter, see below.
         pyarrow.decimal128(38, scale=9).id: "NUMERIC",
     }