Tiberio Mitri (12 July 1926 in Trieste – 12 February 2001 in Rome) was an Italian boxer who fought from 1946 to 1957. During his career, Mitri was the Italian and European middleweight champion. Mitri's professional debut, was 1 August 1946, and over the span of his first four years of fighting, racked up an undefeated record of 50–0. During this period, he won the Italian middleweight crown by defeating Giovanni Manca (1948), then added the European title with a points win over Cyrille Dellannoit of Belgium. He first defended the European honors, by decisioning Jean Stock of France.