Canyon (formerly, Sequoya) is an unincorporated community in Contra Costa County, California situated between Oakland and Moraga in the San Francisco Bay Area. The community is named for its location in the upper canyon of San Leandro Creek along the eastern slope of the Berkeley Hills. It lies at an elevation of 1142 feet (348 m).
The community is mainly traversed by Pinehurst Road and Canyon Road. The homes of the community are nestled amongst the steep, narrow private roads and footpaths that extend from the redwood groves and ferns along the creek, through the mixed live oak, bay, and madrone forests on the steep hillsides, up to the chaparral and knobcone pines that grow along the ridge.