Gressitt Glacier () is a broad glacier, about 45 nautical miles (80 km) long, draining the area between Daniels Range and Emlen Peaks in the Usarp Mountains and flowing northeast to enter the Rennick Glacier just north of Morozumi Range. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960-63. Named by Advisory Committee on Antarctic Names (US-ACAN) for biologist J. Linsley Gressitt, Program Director who made biological studies, particularly in the Ross Sea area, in six austral summers, 1959-60 to 1965-66.
This article incorporates public domain material from the United States Geological Survey document "Gressitt Glacier" (content from the Geographic Names Information System).