Tenaya Canyon is a dramatic and dangerous canyon in Yosemite National Park, California, USA, that runs from the outlet of Tenaya Lake 10 miles down to Yosemite Valley, carrying water in Tenaya Creek through a series of spectacular cascades and pools and thence into a deep canyon below Cloud's Rest, a giant granite mountain adjacent to Half Dome.

From Olmsted Point (a roadside viewing area), Clouds Rest and Yosemite's signature Half Dome dominate the canyon.

At the bottom of the canyon, in Yosemite Valley, lies Mirror Lake, accessible by shuttle bus and a short walk.

The canyon has achieved notoriety because of a curse Chief Tenaya reportedly invoked in the 1850s as a result of the death of his son at the hands of a battalion intending to forcibly displace the Ahwahnechee people of Yosemite Valley.

[3] Some park rangers have reportedly referred to Tenaya Canyon as the Bermuda Triangle of Yosemite.