Mount Brennan (84°15′S 175°54′E / 84.250°S 175.900°ECoordinates: 84°15′S 175°54′E / 84.250°S 175.900°E) is a dome-shaped mountain, 2,540 metres (8,330 ft) high, which is the northernmost prominent summit in the Hughes Range, standing 7 nautical miles (13 km) northeast of Mount Cartwright. It was discovered and photographed by the United States Antarctic Service on Flight C of February 29–March 1, 1940, and surveyed by A.P. Crary in 1957–58. It was named by Crary for Matthew J. Brennan, scientific station leader at Ellsworth Station, 1958.
This article incorporates public domain material from the United States Geological Survey document "Brennan, Mount" (content from the Geographic Names Information System).