Queen Mary's Peak is the summit of the island of Tristan da Cunha, in the South Atlantic Ocean. It has an elevation of 2,062 metres above sea level. It is named after Mary of Teck, the Queen consort of King George V. It is the highest point of the British overseas territory of Saint Helena, Ascension and Tristan da Cunha, and of any British overseas territory with a permanent population. Queen Mary's Peak is ranked 17th by topographic isolation.