The Whitman Glacier is a medium-sized glacier on the eastern flank of Little Tahoma Peak, a sub-peak of Mount Rainier in Washington. Named for the missionary Marcus Whitman, it covers and contains 4.4 billion ft3 (125 million m3) of ice. Starting from near the rocky spire of Little Tahoma at , the glacier flows southeast downhill. A small snowfield connects this glacier with the adjacent Fryingpan Glacier at about . As the Whitman Glacier flows southeast, the Whitman Crest bounds the glacier to the northeast. Upon reaching a flatter plateau at about , the glacier does not flow far before reaching its terminus at to . The small Ohanapecosh Glacier lies east of the terminus. Meltwater from the glacier drains into the Cowlitz River.