Mount McCallum () is a peak rising to about immediately northwest of the Mount Marwick, in the Explorers Range of the Bowers Mountains in Antarctica. Following a proposal by M.G. Laird, leader of a New Zealand Antarctic Research Programme geological party to the area, 1981-82, the mountain was named after New Zealand scientist and mountaineer G. McCallum, who worked in Antarctica in the 1963-64 season, and who perished in an avalanche on Mount Ruapehu, New Zealand, in 1981.