Lake Arthur may refer to:
Canada Lake Arthur (Quebec), a lake in the Côte-Nord administrative region, Quebec.
New Zealand Lake Arthur (West Coast), a lake in the West Coast region, South Island Lake Rotoroa (Tasman), formerly known as Lake Arthur
United States Lake Arthur, Louisiana, a town in Jefferson Davis Parish Lake Arthur (Minnesota), a lake in Polk County Lake Arthur, New Mexico, a town in Chaves County Lake Arthur, Pennsylvania, a lake in Butler County Lake Arthur (Washington), a lake in Spokane, next to Gonzaga University , a ship in the United States Navy named after the Louisiana town
See also Arthurs Lake (Tasmania), a lake in Australia