Dean Lake or Deans Lake may refer to:
Dean Lake (Annapolis), a lake in Nova Scotia Dean Lake (Colchester), a lake in Nova Scotia Dean Lake, Ontario Dean Lake, Minnesota, an unorganized territory Dean Lake (Crow Wing County, Minnesota), a lake in Minnesota Dean Lake (Wright County, Minnesota), a lake in Minnesota Deans Lake (Minnesota), a lake in Scott County Dean Lake (Montana), a lake in Montana Dean Lake (Duchesne County, Utah)