Sentinel Rock is a granitic peak in Yosemite National Park, California, United States. It towers over Yosemite Valley, opposite Yosemite Falls. Sentinel Rock lies 0.7 miles northwest of Sentinel Dome.

John Salathé was a Swiss-born American pioneering rock climber, blacksmith, and the inventor of the modern steel piton. In his later years he promoted Christian spiritualism and vegetarianism.