Gun Lake, often spelled Gunn Lake and also known as Big Gun Lake, is a lake and unincorporated community in the Bridge River Country of the West-Central Interior of British Columbia, Canada, located 5 miles northwest of the community of Gold Bridge. It is approximately 10 km in length and is roughly pistol-shaped when seen from above, and drains via a short connecting creek to Gun Creek, which is an important tributary of the Bridge River, joining it via Carpenter Lake. Lajoie Lake, which is just southwest, is also known as Little Gun Lake and is also a small community.