McKay Lake may refer to:
McKay Lake (Minnesota) McKay Lake (Ottawa), a lake in Ottawa, Ontario McKay Lake (Pic River), a lake in Thunder Bay District, Ontario McKay Lake (Cochrane District), a lake in Cochrane District, Ontairo McKay Lake (Muskoka District), a lake in Muskoka District, Ontario McKay Lake (Simpson Island), a lake on Simpson Island, Thunder Bay District, Ontario McKay Lake (Manitoba), a lake near Grand Rapids, Manitoba