Willis Merwyn Johnson (May 9, 1923 – July 14, 2019), better known as Merv Johnson, was a Canadian farmer and politician in Saskatchewan. Johnson was the Co-operative Commonwealth Federation Member for Parliament for Kindersley, Saskatchewan. He first won his seat in the House of Commons of Canada in the and was re-elected in 1957 before being defeated in the 1958 general election in the Diefenbaker landslide. He attempted to re-enter the House of Commons in several subsequent elections as a New Democrat but was unsuccessful.