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.