McArthur Lake, MacArthurs Lake, MacArthur's Lake, or variations, may refer to:

• MacArthur's Lake (Victoria), a lake near Hattah, Victoria

• Lake McArthur in Yoho National Park west of Lake Louise (Alberta)

• McArthur Lake, Ontario, south of Timmins

• McArthur Lake, Northwest Territories on the Taltson River

• Lac McArthur (McArthur Lake), in the Outaouais region, near Denholm

• McArthur Lake, Idaho
  • McArthur Lake Wildlife Management Area which includes it

((disambiguation))