Mount Wister, Mountain summit in Grand Teton National Park, Wyoming, US.

Mount Wister is a 11,495-foot (3,504 m) peak in the Teton Range of Grand Teton National Park, Wyoming. It rises between the two forks of Avalanche Canyon, about 5 miles (8 km) west of Taggart Lake, east of Veiled Peak and roughly 1.3 km north of Buck Mountain. Snowdrift Lake and Lake Taminah lie in the North Fork below the mountain.

The mountain was first documented climbed by Phil Smith in 1928, establishing early routes through challenging terrain. This first ascent marked the beginning of the peak's exploration for mountaineers.

Mount Wister honours Owen Wister, the American author who visited the Jackson Hole area often in the late 1800s. He is best known for the 1902 novel The Virginian, set in Wyoming ranch country. The peak's name keeps the writer tied to the landscape he returned to repeatedly.

Climbers reach Mount Wister via the Taggart Lake Trailhead near the park entrance. A permit from the Jenny Lake Ranger Station is necessary if you plan to camp overnight in Avalanche Canyon.

The north face was first climbed in 1952 by Willi Unsoeld, Bea Vogel and Leigh Ortenburger, a route that remains a benchmark in the Teton Range. The peak stands between the two forks of Avalanche Canyon, with Snowdrift Lake and Lake Taminah in the North Fork.