Harvey Harold McMahon (September 20, 1887 - November 17, 1959[1]) was a merchant and political figure in Saskatchewan. He represented Gull Lake from 1939 to 1944 in the Legislative Assembly of Saskatchewan as a Liberal.
He was born in Millbrook, Ontario, the son of James Brown McMahon and Louise Cann, and was educated there. In 1920, he married a Miss Anderson.[2] McMahon served six years on the town council for Shaunavon, Saskatchewan. He operated a general store in Shaunavon for 20 years.
McMahon was defeated when he ran for reelection to the provincial assembly in 1944. In 1947, he retired to Vancouver, British Columbia,[3] where he later died at the age of 72.[1]