Giacomo Losi was an Italian professional football manager and player, who played as a defender. He spent his entire professional career, from 1955 to 1969, with Italian club A.S. Roma.

Associazione Sportiva Roma, commonly referred to as Roma, is a professional football club based in Rome, Italy. Founded by a merger in 1927, Roma has participated in the top tier of Italian football for all of its existence, except for the 1951–52 season. Roma has won Serie A three times, in 1941–42, 1982–83 and 2000–01, as well as nine Coppa Italia titles and two Supercoppa Italiana titles. In European competitions, Roma won the Inter-Cities Fairs Cup in 1960–61 and the UEFA Europa Conference League in 2021–22, while they finished runners-up in the 1983–84 European Cup, the 1990–91 UEFA Cup and the 2022–23 UEFA Europa League.