Achille Tramarin (Padua, 12 August 1946) is an Italian Venetist politician.
In 1978–1980 he took part to the foundation of Liga Veneta and in 1980 he was elected first national secretary of the party. During the party's first official meeting in Recoaro on 9 December 1979, Tramarin gave a famous speech titled Venetian Autonomy and Europe: "Today for Venetians the moment has come, after 113 years of Italian unitary colonization, to take their natural and human resources back, to fight against the wild exploitation that has brought emigration, pollution and rooting out from their culture".
In 1983 he was elected to the Italian Chamber of Deputies and thus became the first deputy of his party's history. Soon after the election Franco Rocchetta, who had been behind the scenes up to that moment and was disappointed by his missed election, hinted that Tramarin should step down from the post of party leader. After a power struggle, Rocchetta won the battle for the party's leadership and Tramarin was replaced as national secretary by Marilena Marin, future wife of Rocchetta. Subsequently Tramarin, while continuing to represent Liga Veneta in the Italian Parliament, was ousted from the party and formed Liga Veneta Serenissima, which proved to be a very unsuccessful political party, gaining only 0.2% of the vote in the 1985 regional election.
Tramarin never joined Lega Nord and is currently active in Liga Veneta Repubblica, a minor Venetist party led by Fabrizio Comencini.