Duilio Loi (April 19, 1929 – January 20, 2008) was an Italianboxer who held the Italian and European lightweight and welterweight titles, as well as the world junior welterweight championship. Loi fought from 1948 to 1962, and retired with a record of 115 wins (26 KOs), 3 losses and 8 draws. He was born in Trieste from a Sardinian family.
Loi fought many outstanding fighters in his career, including lightweight great Carlos Ortiz and Eddie Perkins. Although all their fights were close, Loi won two out of three bouts from Ortiz.