Teton Glacier, Glacier in Grand Teton National Park, United States

Teton Glacier is a mountain glacier lying in a cirque on the northeast flank of Grand Teton, south of Mount Owen, at the head of Glacier Gulch. It is the largest of the park's named glaciers, measuring about 3,500 feet long and 1,100 feet wide in 1971. Its meltwater drains to Delta Lake and via Glacier Falls into Cottonwood Creek.

Teton Glacier lies in a cirque on the northeast flank of Grand Teton, south of Mount Owen, at the head of Glacier Gulch. Its meltwater drains into Delta Lake and, via Glacier Falls, into Cottonwood Creek and eventually the Snake River. In 1971 it measured about 1,100 m long and 340 m wide; between 1967 and 2006 it lost roughly 20 percent of its area, shrinking from 26 to 21 hectares.

Teton Glacier feeds Delta Lake, whose outflow drops over Glacier Falls into Cottonwood Creek and eventually the Snake River. Walkers heading to Delta Lake pass below the glacier's terminus in Glacier Gulch, at the head of the valley beneath the Grand Teton's northeast face.

The best spots for viewing are the marked turnouts along Teton Park Road or hiking trails within the park. Visit during the warmer months when most paths and viewpoints are fully accessible.

Teton Glacier drains into Delta Lake and then via Glacier Falls into Cottonwood Creek, which reaches the Snake River. The meltwater link between the ice and the valley below is easy to trace on a map, though the glacier itself sits in a cirque at the head of Glacier Gulch.