Chocolate Glacier, Mountain glacier in Snohomish County, Washington, United States

Chocolate Glacier is a glacier on the eastern slopes of Glacier Peak in the North Cascades, dropping roughly 4,500 feet (1,400 m) from its upper reaches. It connects near the summit with Cool Glacier and features the dramatic terrain typical of high alpine ice masses in this mountain range.

Claude Ewing Rusk named the glacier in 1906 after observing brown-colored discharge flowing from its terminus during a mountaineering trip. The name reflects a distinctive characteristic that caught his attention while exploring this remote alpine area.

The name comes from Claude Ewing Rusk, who in 1906 saw chocolate-coloured water running from the terminus. The glacier's lowest 300 m are stagnant, while the ice above stays heavily crevassed and active to about 1,900 m. Its terminus at 1,800 m is the lowest on Glacier Peak's east side.

Access requires solid mountaineering experience and specialized gear, as the surface contains numerous crevasses and steep terrain. Only well-prepared climbers with proper training should attempt to reach or cross this glacier.

Chocolate Glacier's lowest 300 m (980 ft) are stagnant ice, while the glacier stays heavily crevassed and active up to 1,900 m (6,200 ft). Its terminus at 1,800 m (5,900 ft) remains the lowest of any glacier on the east side of Glacier Peak.