William Duncan McKay Wylie (1 April 1900 – 21 December 1981) was a farmer, public servant and Canadian federal politician.
Wylie first ran for a seat in the House of Commons of Canada as a Social Credit Party candidate in the 1945 federal election.
He defeated 3 other candidates by a comfortable margin to win the electoral district of Medicine Hat and his 1st term in office.
Wylie would run for re-election in the 1949 federal election, he would be re-elected in a landslide winning the largest plurality of his career.
Wylie would attempt to run for a 3rd term and be re-elected in the 1953 federal election.
He would be nearly defeated by Liberal candidate Harry Veiner.
Wylie served out his last term and retired in 1957.