Fremont Canyon may refer to:
A tributary of Santiago Creek in Orange County, California
Fremont Canyon (Utah), and the upper part of Fremont Wash in Iron County, Utah
Fremont Canyon (Natrona County, Wyoming), a Bureau of Land Management Back Country Byway Fremont Canyon Powerplant, at the Pathfinder Dam on the North Platte River, Wyoming
See also Fremont Cannon