The 2004 Valencian Community motorcycle Grand Prix was the last round of the 2004 MotoGP Championship.

It took place on the weekend of 29–31 October 2004 at the Circuit Ricardo Tormo.

Kenny Roberts Jr. was replaced by Gregorio Lavilla after the first practice session due to injury.

[2] Below are the standings for the top five riders and constructors after round sixteen has concluded.

[8]