The 1958 Italian Grand Prix was a Formula One motor race held at Monza on 7 September 1958. It was race 10 of 11 in the 1958 World Championship of Drivers and race 9 of 10 in the 1958 International Cup for Formula One Manufacturers. Vanwall won the first Constructors' Championship in the category with 1 race left to go. After retiring his original car, entered by Scuderia Centro Sud, Carroll Shelby took over Masten Gregory's car, entered by Temple Buell, and finished fourth. No points were awarded for the shared drive.