Junko Tabei (Japan) (b. 22 Sep 1939) reached the summit of Mount Everest on 16 May 1975.
Since her historic climb Tabei also became the first woman to climb the 'Seven Summits' (the highest peak on each continent) and has conquered over 70 other major peaks around the world. Concerned about the environmental impact of climbing expeditions on Everest and other mountains, she now directs the Himalayan Adventure Trust of Japan, an organisation dedicated to the protection of these environments.
Comments below may relate to previous holders of this record.