Round Valley may refer to: Basins or valleys in the United States Round Valley (Pinto Mountain), a valley, in San Bernardino County, California Round Valley, a basin in Mendocino County, California; see Round Valley (Millard County, Utah), a valley in Millard County and Sevier County, Utah; see Denmark Wash Populated places Rural Municipality of Round Valley No. 410, Saskatchewan, Canada Round Valley, Arizona, a census-designated place in Gila County, Arizona Round Valley, California, a census-designated place in Inyo County, California Round Valley, Plumas County, California, a former settlement in Plumas County, California Round Valley, Nebraska, an unincorporated community in Custer County, Nebraska Other uses Round Valley Indian Tribes of the Round Valley Reservation, in Mendocino County, California Round Valley Reservoir, in Hunterdon County, New Jersey Round Valley Unified School District, in Apache County, Arizona