The Prix d'Ispahan is a Group 1 flat horse race in France open to thoroughbreds aged four years or older.
The inaugural running of the Prix d'Ispahan was the showpiece event of a meeting held at Longchamp on 13 July 1873.
The Prix d'Ispahan was initially contested over 3,000 metres, and it was originally open to horses aged three or older.
The present system of race grading began in 1971, and the Prix d'Ispahan was classed at the highest level, Group 1.
In 2020, Prix d'Ispahan moved to July and three years old horses can run by one time basis.