The 1963 Giro d'Italia was the 46th running of the Giro d'Italia, one of cycling's Grand Tour races. The Giro started in Naples, on 19 May, with a 182 km (113.1 mi) stage and concluded back in Milan, on 9 June, with a 136 km (84.5 mi) leg. A total of 120 riders from 12 teams entered the 21-stage race, which was won by Italian Franco Balmamion of the Carpano team. The second and third places were taken by Italian riders Vittorio Adorni and Giorgio Zancanaro, respectively.