马丁半岛是南极洲的半岛，位于盖茨冰架和多特森冰架之间的南极州半岛，处于玛丽伯德地沿岸，北面与阿蒙森海相接，长96公里、宽32公里。

Martin Peninsula (74°20′S 114°30′W / 74.333°S 114.500°W / -74.333; -114.500) is a peninsula about 96 km (60) mi long and 32 km (20 mi) wide that is ice covered except for a few rock outcrops along its margins, located between Getz Ice Shelf and Dotson Ice Shelf on the coast of Marie Byrd Land, Antarctica. The farthest point of the peninsula is Jacobsen Head.