William Renwick Riddell (6 Apr 1852-18 Feb 1945) was a Canadian lawyer, judge, and historian. Riddell was born in Hamilton Township, Ontario and attended Cobourg Grammar School and Victoria College. He was called to the bar in 1883, and conducted a law practice in Cobourg until he moved to Toronto in 1893. Riddell was appointed as judge to the Supreme Court of Ontario in 1906.[1]
As a historian, he published numerous works of legal, medical and social history, including biographies of William Kirby and John Graves Simcoe.