Parsons Peak is a mountain in Yosemite National Park and the Cathedral Range of California's Sierra Nevada. The peak, located on the Madera–Tuolumne county line, rises to an elevation of . The mountain has a ridge extending northwest from the summit. On this ridge is a point, referred to as Parsons Peak-Northwest Ridge, which rises to an elevation of about and at this point the boundaries of Mariposa, Tuolumne, and Madera counties meet. This point is the highest point in Mariposa County. The summit of Parsons Peak is just outside Mariposa County.
Most of the precipitation that falls on the mountain is snow due to the very high elevation.
The peak was named for Edward Taylor Parsons who for many years was a director of the Sierra Club.