Repulse Peak is a mountain summit in the North Cascades in the U.S. state of Washington. It is located on the border of the Stephen Mather Wilderness and North Cascades National Park. It's situated midway between Black Peak and Fisher Peak, and can be seen from the North Cascades Highway. Precipitation runoff from Repulse Peak drains into tributaries of the Skagit River and Stehekin River.