Trout Lake, also known as Trout Lake City, is an unincorporated rural community and former mining and railway-speculation boomtown located at the north end of Trout Lake in the West Kootenay district of southeastern British Columbia, Canada. The Lardeau River runs into Trout Lake (the lake) and exits at the south end of the lake. It then runs as does the lake on a southeastern course to the community of Lardeau at the north end of Kootenay Lake, while beyond it and the townsite of Trout Lake at its northwestern end is a low pass to the Beaton Arm of Upper Arrow Lake at Galena Bay.