Lt.-Colonel William McKay (1772 – 18 August 1832) is remembered for leading the Canadian Forces to victory at the Siege of Prairie du Chien during the War of 1812. After the war, he was appointed Superintendent of Indian Affairs at Drummond Island in what was then Upper Canada. Previous to the war, McKay was a noted fur trader who had travelled widely in Canada. He was a partner of the North West Company and a member of the Beaver Club at Montreal. He was a brother of Alexander McKay, who accompanied Sir Alexander Mackenzie to the Pacific Ocean in 1793.