Marts Peak is a high, small and sharp peak at the east edge of the ice-covered Vinson Plateau in the Sentinel Range of the Ellsworth Mountains, Antarctica. It surmounts Dater Glacier to the northeast and Hammer Col to the south.
The peak was named by US-ACAN in 2006 after Brian Marts, a member of the 1966–67 American Antarctic Mountaineering Expedition that made the first ascent of Mount Vinson, the summit of Antarctica, and other high mountains in the Sentinel Range.
Marts Peak is located at, which is east-southeast of Mount Vinson, northeast of Opalchenie Peak and east by north of Silverstein Peak, according to US maps made in 1961 and updated in 1988.
