The Prix La Rochette is a Group 3 flat horse race in France open to two-year-old thoroughbreds.
It is run at Longchamp over a distance of 1,400 metres (about 7 furlongs), and it is scheduled to take place each year in September.
The Prix Triennal was renamed in memory of Charles de La Rochette (1820–1889), a long-serving steward of the Société d'Encouragement, in 1889.
The series switched to Chantilly in 1906, and from this point the two and three-year-old parts were split into separate divisions for colts and fillies.
The Prix La Rochette was cancelled three times during World War II, in 1939, 1940 and 1944.