Mount Saint John, Mountain summit in Grand Teton National Park, Wyoming, US

Mount Saint John is a peak in Grand Teton National Park that rises to 11,434 feet above the landscape. It overlooks Jenny Lake and provides access to alpine terrain with cirque lakes and hanging valleys nearby.

In 1931, the United States Board on Geographic Names named the mountain in honor of Orestes St. John, a geologist who studied the Teton region. The sources record no first ascent, so the climbing history of the summit remains undocumented in them.

In 1931 the mountain was named in honor of Orestes St. John, the explorer and geologist who surveyed the Teton region. The name is the main cultural trace of his work on the range, and it appears on maps of the park beside Symmetry Spire and Rockchuck Peak.

Climbers must register at the ranger station before starting the ascent and should plan their visit between July and September when conditions are most favorable. The route demands alpine experience and sturdy equipment for steep terrain.

Just south of the summit sits the Lake of the Crags, a glacial cirque lake tucked beneath surrounding peaks. Reaching this hidden water requires exploring unmarked paths through Hanging Canyon, making it a reward for curious hikers.