Samuel Fletcher (died 1950) was a politician in Manitoba, Canada. He served in the Legislative Assembly of Manitoba representing the Killarney constituency from 1920 to 1922.^[1]

Fletcher worked as a farmer, and lived in Holmfield, Manitoba, where he served as a member of the West Derby School board.^[2] He was then elected to the Manitoba legislature in the 1920 provincial election, defeating Liberal incumbent Samuel M. Hayden by 396 votes. Fletcher was elected as a Farmer candidate, representing a movement that opposed the province's two-party system of Liberals and Conservatives.

He sat with the Independent-Farmer group in the legislature, and did not seek re-election in 1922.