Teewinot Mountain, Mountain summit in Grand Teton National Park, Wyoming, United States.

Teewinot Mountain is a summit in the Teton Range that rises approximately 3,750 meters (12,325 feet) and features steep rock faces and exposed ridges. The peak is marked by several sharp, vertical rock formations that define its distinctive appearance.

Teewinot Mountain is part of the Cathedral Group, the cluster of the range's highest summits between Cascade Canyon and Avalanche Canyon. The Teton Range itself began to rise about 9 million years ago during the Miocene, making it the youngest mountain chain in the Rocky Mountains. Repeated glaciation then carved the peak and its neighbours into their present shapes.

The name, originally recorded as Tee-Win-At, comes from the Shoshone language and means "pinnacles", fitting a summit that is a large monolith with several sharp spires. The highest spire is exposed and has room for only one or two people.

The usual route starts at the Lupine Meadows Trailhead south of Jenny Lake and follows the unmarked Apex Trail up much of the mountain. The final stretch is an exposed Class 4 scramble to a summit large enough for only one or two people. Broken Falls drops 300 feet down the eastern slopes.

The summit is a single large monolith whose highest spire is exposed and large enough for only one or two people at a time. The unmarked Apex Trail from Lupine Meadows leads most of the way up the East Face before the final Class 4 scramble.