West Kootenay-Boundary was a provincial electoral district for the Legislative Assembly of British Columbia, Canada from 2001 to 2009.
The seat combined the Rossland/Trail/Castlegar area (the putative West Kootenay component) that had previously been in Rossland-Trail with the Boundary Country, which had been in the Okanagan-Boundary riding (1991–1996) and prior to that the Boundary-Similkameen riding.
For other historical and current ridings in the Kootenay and Boundary Countries please see Kootenay (electoral districts).
Its MLA is Katrine Conroy. She was first elected in 2005. She represents the New Democratic Party of British Columbia.