Mount Stuart is a mountain in the Cascade Range, in the U.S. state of Washington. It is the second highest non-volcanic peak in the state, after Bonanza Peak and seventh-highest overall. Mount Stuart is the highest peak in the Stuart Range, and it is located in the central part of the Washington Cascades, south of Stevens Pass and east of Snoqualmie Pass in the Alpine Lakes Wilderness.

Friedrich Wolfgang Beckey, known as Fred Beckey, was an American rock climber, mountaineer and book author, who in seven decades of climbing achieved hundreds of first ascents of some of the tallest peaks and most important routes throughout Alaska, the Canadian Rockies and the Pacific Northwest. Among the Fifty Classic Climbs of North America, seven were established by Beckey, often climbing with some of the best known climbers of each generation.