Monte Sarmiento is a pyramidal peak with a glaciated saddle-shaped summit located within Alberto de Agostini National Park, in the Chilean portion of Tierra del Fuego.

[1] The eastern summit of Monte Sarmiento was climbed on 7 March 1956 by an expedition including the Italian mountaineers Clemente Gueret and Carlo Mauri.

The west summit of Monte Sarmiento was climbed in 1995 by a party including the British mountaineers Stephen Venables, John Roskelley and Tim Macartney-Snape.

A German team composed of Robert Jasper, Jörn Heller and Ralf Gantzhorn, climbed the North Face to the western summit on April 4, 2010.

The mountain is mentioned in the novels Twenty Thousand Leagues Under the Seas and Robur the Conqueror, both by Jules Verne, and in This Thing of Darkness by Harry Thompson.