The 1955 Italian Grand Prix was a Formula One motor race held at Autodromo Nazionale di Monza, in Monza, Italy on 11 September 1955.

It was the seventh and final race of the 1955 World Championship of Drivers.

The Monza circuit near Milan had been revamped and resurfaced, and had been given all new pit and safety facilities.

The Curva Sud had also been modified from 2 right hand corners into one sweeping right-hander known as the "Parabolica", where run-off area was implemented.

This was the last Grand Prix race for 1950 world champion Nino Farina.