Juliano earned 18 caps for the Italy national football team between 1966 and 1974, and was a member of the championship-winning team of Euro 68. He was also in the Italian squad for three World Cup finals: 1966 (wearing the number 10 shirt), 1970 and 1974. However, he played only one World Cup match, the 4–1 defeat by Brazil in the 1970 final, after coming on as a substitute.