East Kootenay South was an electoral district in the Canadian province of British Columbia in the 1898 and 1900 elections. Its official name was East Kootenay (South Riding). It was created by the partition of the old East Kootenay riding which also created its sibling, East Kootenay (North Riding). Successor ridings in the East Kootenay region were Cranbrook, Fernie, and Columbia.