The Grand Prix de Chantilly is a Group 2 flat horse race in France open to thoroughbreds aged four years or older.
It is run at Chantilly over a distance of 2,400 metres (about 1½ miles), and it is scheduled to take place each year in late May or early June.
The event replaced the Grand Prix d'Évry, a race established when Évry Racecourse opened in 1973.
It was run each year until the venue closed in 1996, and the present version was introduced at Chantilly in 1997.
The leading horses from the Grand Prix de Chantilly often go on to compete in the Grand Prix de Saint-Cloud.