Leslie Alexander Mutch (14 January 1897 – 2 January 1977) was a Liberal Party member of the House of Commons of Canada. He was born in Crystal City, Manitoba. His career included jobs as an advertising executive for Eaton's, a life insurance agent and a teacher. Mutch graduated from the University of Manitoba in 1921 with a Bachelor of Arts and earned a Master of Arts degree there as well in 1929. He entered military service for World War I under the Queen's Own Cameron Highlanders, leaving the military in August 1945.