John Stewart, 1st Earl of Atholl (1566-1603) was a Scottish landowner. John Stewart was first Lord Innermeath and made Earl of Atholl in 1596. His parents were James Stewart, 5th Lord Innermeath and Helen Ogilvy, a daughter of James Ogilvy, Lord Airlie, and Helen Sinclair. His uncle was the court poet, John Stewart of Baldynneis. In March 1592 his brother Robert Stewart, who had been a servant of the murdered Earl of Moray, stole the a trunk of money belonging to the Earl of Huntly and twice tried to assassinate him by entering his house in disguise armed with a pistol.