Mount Southwick () is a mountain (3,280 m) near the south end of the Sentinel Range of the Ellsworth Mountains in Antarctica, located 9 nautical miles (17 km) south-southeast of Mount Craddock. The peak surmounts Bolgrad Glacier to the northwest, Kornicker Glacier to the east and Sirma Glacier to the southwest.
First mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1957-59. Named by Advisory Committee on Antarctic Names (US-ACAN) for Tech. Sgt. Thomas E. Southwick, United States Marine Corps (USMC), navigator on a Navy R4D reconnaissance flight to these mountains on January 28, 1958.
This article incorporates public domain material from the United States Geological Survey document "Mount Southwick" (content from the Geographic Names Information System).