W.B. Scarth

William Blakeman Scarth (May 24, 1895 – March 9, 1983) was a politician in Manitoba, Canada. He served in the Legislative Assembly of Manitoba from 1958 to 1962 as a Progressive Conservative.

The son of William Frederick Scarth and Nellie Blakeman, Scarth was born in Virden, Manitoba. During World War I, he served in the Canadian Expeditionary Force. Scarth was educated at the University of Manitoba, receiving a law degree, and then practised law in Flin Flon, Dauphin, The Pas and Winnipeg. In 1928, he married Clara Irene. Scarth served as president of Pascar Oils Ltd., and was director of Lylemore Petroleums Ltd. During the Second World War, he spent four years in the Royal Canadian Air Force with the Judge Advocate General's Branch.

He campaigned for the Canadian House of Commons in the federal election of 1940, running as a "National Government" (i.e. Conservative) candidate in the northern Manitoba riding of Churchill. He was defeated by Liberal cabinet minister Thomas Crerar.