Rockchuck Peak, Mountain summit in Grand Teton National Park, Wyoming, USA.

Rockchuck Peak is a mountain summit in Grand Teton National Park that rises steeply from the landscape west of String Lake. The slopes display rough rock formations that give this area its distinctive appearance.

Fritioff Fryxell, the first park ranger of Grand Teton National Park, made the first ascent on 16 August 1929. The German-language source gives this date, while the English Wikipedia article on the peak records no ascent at all. The summit stands 11,149 feet (3,398 m) high, immediately west of String Lake and south of Paintbrush Canyon.

The mountain attracts geologists who want to study the rock formations of the Teton Range and understand how this landscape developed. Visitors hiking here can observe the varied layers and types of stone exposed on the slopes.

Access is available through established trails from String Lake, though technical climbing skills and proper equipment are needed. Visitors should know that difficult terrain and high elevation require physical preparation.

Rockchuck Peak rises directly above the Jackson Hole valley floor, so it is visible from almost every point in the valley, flanking the Teton Range much as Grand Teton and Mount Moran do. Its summit stands 0.5 miles (0.8 km) north of Mount Saint John, with Mount Woodring about 2 km to the northwest.