The 2005 French motorcycle Grand Prix was the fourth round of the 2005 MotoGP Championship.

It took place on the weekend of 13–15 May 2005 at the Bugatti Circuit located in Le Mans, France.

Makoto Tamada was replaced by Jurgen van den Goorbergh after the first practice session due to a wrist injury he had sustained at the Portuguese Grand Prix.

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

[8]