The Fife Socialist League was a left-wing political party founded in Fife, Scotland in 1953. Led by the miners' activist Lawrence Daly, they contested the West Fife constituency in the 1959 general election, polling 4,886 votes, more than the total received by the candidate of the Communist Party of Great Britain (until 1950 the seat was held by the Communist MP William Gallacher).
The Fife Socialist League was a collection of left-wing activists who were attempting to challenge the Labour Party from the left. Unlike Labour they were stridently opposed to nuclear weapons.
The Fife Socialist League's activities dwindled by the early 1960s, and in 1964 it dissolved itself into the Labour Party.