Mount Breckinridge is a mountain, 2,050 metres (6,730 ft) high, standing 4 nautical miles (7 km) south of Stor Hånakken Mountain in the Napier Mountains of Enderby Land, Antarctica. It was mapped by Norwegian cartographers from aerial photos taken by the Lars Christensen Expedition of 1936–37, and was named "Langnuten" (the long peak). It was rephotographed by the Australian National Antarctic Research Expeditions in 1956 and renamed by the Antarctic Names Committee of Australia for J.E.