Iain Borb MacLeod (Scottish Gaelic: Iain Borb MacLeòid; Anglicised as: John "the Turbulent" MacLeod) (1392–1442) is considered to be the sixth chief of Clan MacLeod. He is the first MacLeod chief to which heraldry can be assigned. Clan tradition states that he was a minor at the time of his father's death and for six years an incompetent guardian led the clan to its lowest point in clan history.