The Prix Eclipse is a Group 3 flat horse race in France open to two-year-old thoroughbreds.
It is run at Chantilly over a distance of 1,200 metres (about 6 furlongs), and it is scheduled to take place each year in October.
The race was abandoned throughout World War I, with no running from 1914 to 1918.
Due to World War II, the Prix Eclipse was cancelled from 1939 to 1944.
In recent years, the race has had spells at Maisons-Laffitte (2001–03, 2005, 2010–11, 2016) and Chantilly (2004, 2006–09, 2012–2015).