Leonard Melvin Larson (November 11, 1912 – March 1977) was a farmer and political figure in Saskatchewan. He represented Pelly from 1964 to 1967 as a Co-operative Commonwealth Federation (CCF) member and from 1971 to 1977 as a New Democratic Party (NDP) member in the Legislative Assembly of Saskatchewan.He was born on a farm near Stornoway, Saskatchewan. Larson helped found the Kamsack Credit Union and the Kamsack Community Clinic.