Harwell Glacier () is a steep-walled tributary glacier, 3 nautical miles (6 km) long, descending the north slopes of the Prince Olav Mountains just east of Mount Smithson to enter the upper part of Gough Glacier. Named by Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Thomas W. Harwell, CEC, U.S. Navy, who participated in Naval Support Activity during Operation Deep Freeze 1964.
This article incorporates public domain material from the United States Geological Survey document "Harwell Glacier" (content from the Geographic Names Information System).