The Slocan Valley is a valley in the West Kootenay region of British Columbia, Canada.
The valley is home to the villages of Slocan City, New Denver, Silverton, as well as the unincorporated communities of Crescent Valley, Slocan Park, Passmore, Vallican, Winlaw, Appledale, Perry Siding, Lemon Creek, Rosebury, and Hills. Valhalla Provincial Park is located on the western side of the upper part of the valley, and is adjoined on its south by the valley of the Little Slocan River. Just east of Slocan Lake are the ghost towns of Sandon, Cody and others, which were busy mining towns during the silver and galena mining era known as the Silvery Slocan (1890s-1900s).