Valdo Spini (born 20 January 1946 in Florence) is an Italian politician and author. A long-time member of the Italian Socialist Party (PSI), in 1994 he founded the Labour Federation (FL), of which he was leader until 1998, when FL merged into the Democrats of the Left (DS) party. He has since been a leading member of the Socialist faction within the DS. (1998–2007).He was elected to the Italian Chamber of Deputies in 1979, and re-elected seven times, remaining in office as an MP until 2008. Valdo Spini is a Waldensian, the son of , a prominent Italian historian who died in 2006.