McCleary Glacier (79°33′S 156°50′E / 79.550°S 156.833°E) is a broad glacier about 10 nautical miles (20 km) long, draining southward into Darwin Glacier, Antarctica, just west of Tentacle Ridge. It was mapped by the United States Geological Survey from tellurometer surveys and Navy air photos, 1959–63, and was named by the Advisory Committee on Antarctic Names for , a public information officer on the staff of the U.S. Antarctic Projects Officer (USAPO) (1959–61), whose labors helped to start the Bulletin of the USAPO.