The Prix Vicomtesse Vigier is a Group 2 flat horse race in France open to thoroughbreds aged four years or older.
It is run at Longchamp over a distance of 3,100 metres (about 1 mile and 7½ furlongs), and it is scheduled to take place each year in May.
It was originally the second leg of a pair of races called the Prix Biennal.
The older horses' version was held at Maisons-Laffitte from 1943 to 1945, and on the first occasion it was contested over 3,100 metres.
This was in honour of Vicomtesse Vigier, Madeleine Double de Saint-Lambert (1869–1970), the niece of Jean Prat, who inherited her uncle's stable upon his death.