Mawson Peak is an active volcanic summit of the Big Ben massif on Heard Island, an external Australian territory in the Indian Ocean.

[7] Mawson Peak is ranked the 30th of Earth's most topographically isolated summits.

Mawson Peak was named by the 1948 Australian National Antarctic Research Expeditions Heard Island Expedition after the Australian geologist and explorer Sir Douglas Mawson, the leader of the British Australian and New Zealand Antarctic Research Expedition 1929–1931, who visited the island in November – December 1929.

[8] On 20 February 1950, whilst aboard HMAS Lebuan, Thomas Gratton Young OAM observed and recorded in the ship's log that Mawson Peak was an active volcano.

An earlier attempt on the peak during the 1953–1954 research expedition was described[9] by its leader, John Béchervaise.