Mount Sumner (74°30′S 63°45′W / 74.500°S 63.750°W / -74.500; -63.750) is a mountain at the southeast end of the Rare Range, in Palmer Land. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1961–67. Named by Advisory Committee on Antarctic Names (US-ACAN) for Joseph W. Sumner, utilities, at South Pole Station in 1964. Passed away December 14, 2016 at his residence after a 5-month battle with cancer.

 This article incorporates public domain material from "Mount Sumner". Geographic Names Information System. United States Geological Survey.