Oak Lake may refer to:
Oak Lake, Manitoba, a small town in Manitoba, Canada Oak Lake Beach, a community in Manitoba Oak Lake (Manitoba), a lake in Manitoba Oak Lake, Minnesota, United States, a former town Oak Lake, a lake in Carver County, Minnesota Oak Lake, a lake in Lincoln County, Minnesota Oak Lake (Polk County, Minnesota) Oak Lake (Nova Scotia), the name of various lakes in Nova Scotia Oak Lake (South Dakota) Oak Lake Indian Reserve, a reserve in Manitoba