The 2014 Prix de l'Arc de Triomphe was a horse race held at Longchamp on Sunday, 5 October 2014. It was the 93rd running of the Prix de l'Arc de Triomphe.

Treve is a French Thoroughbred racehorse who was the 2013 European Horse of the Year after being unbeaten in four races as a three-year-old. These included the Prix de Diane, Prix Vermeille and Prix de l'Arc de Triomphe.