Joseph Finn (1865 – 1945) was a trade unionist and journalist in Britain. Born to a Jewish family in Eastern Europe, Finn became a tailors' machiner in Leeds, in England. He was fluent in both English and Yiddish, and became the Leeds correspondent of the Poilishe Yidel. He joined the Social Democratic Federation (SDF), and tried to promote solidarity between Jewish workers and socialists in the city. He remained with the SDF until 1885, when he was part of the breakaway which formed the Socialist League.