The Prix de Diane, sometimes referred to as the French Oaks, is one of the most important Group 1 horse races in France open to three-year-old thoroughbred fillies. It is run at Chantilly over a distance of 2,100 metres, and it is scheduled to take place each year in June.

Horse racing is an equestrian performance sport, typically involving two or more horses ridden by jockeys over a set distance for competition. It is one of the most ancient of all sports, as its basic premise – to identify which of two or more horses is the fastest over a set course or distance – has been mostly unchanged since at least classical antiquity.