McArthur Lake and variations may refer to:
Canada Lake McArthur (British Columbia), a lake in Yoho National Park McArthur Lake (Northwest Territories), a lake east of Great Slave Lake McArthur Lake (Ontario), a lake south of the city of Timmins McArthur Lake (Saskatchewan), a lake east of Pelican Narrows, Saskatchewan Lac McArthur (Val-des-Monts), a lake in Quebec
United States McArthur Lake (Idaho), a reservoir in Idaho McArthur Lake Wildlife Corridor, a wildlife corridor in Idaho McArthur Lake Wildlife Management Area, a protected area in Idaho McArthur Lake (Fort Bragg), a reservoir in North Carolina
See also List of lakes named McArthur, includes variations such as "MacArthur's Lake" in Australia McArthur (disambiguation)