The 1913 Giro d'Italia was the fifth edition of the Giro d'Italia, a Grand Tour organized and sponsored by the newspaper La Gazzetta dello Sport. The race began on 6 May in Milan with a stage that stretched to Genoa, finishing back in Milan on 22 May after a stage and a total distance covered of . The race was won by the Italian rider Carlo Oriani of the Maino team. Second and third respectively were the Italian riders Eberardo Pavesi and Giuseppe Azzini.
It was the last Giro with a final classification in points and the first one in which the final winner of the race did not win a single stage. The Giro saw the debut of the twenty-year-old Costante Girardengo, who won the 6th stage. The 1913 Giro was the last concluded by Luigi Ganna, winner of the first edition.
Changes from the 1912 Giro d'Italia
Outside the yearly changes in the route, race length, and number of stages, the biggest change to how the general classification was to be calculated. The race organizer