John MacLeod (Scottish Gaelic: Iain MacLeòid) was chieftain of the Isle of Lewis in the 1520s and 1530s.
John's uncle Malcolm had managed to reacquire the ancestral island.
Malcolm's death, and the minority of his son Rory, enabled John to seize the entire island of Lewes and its dominions.
John was the chief ally of Domhnall 'gruamach', laird of Sleat.
Together they expelled the MacLeods from Trotternish and prevented them from taking possession of Sleat and North Uist.