The 2004 Italian motorcycle Grand Prix was the fourth round of the 2004 MotoGP Championship.

It took place on the weekend of 4–6 June 2004 at the Mugello Circuit.

It was later restarted for the remaining 6 laps, with the grid determined by the running order before the suspension.

The second part of the race determined the final result.

Below are the standings for the top five riders and constructors after round four has concluded.