2018 Prix de l'Arc de Triomphe
| 97th Prix de l'Arc de Triomphe Longchamp, 7 October 2018 |
| won by Enable |
The 2018 Prix de l'Arc de Triomphe was a horse race which was held at Longchamp on Sunday 7 October 2018. The race was run at Longchamp Racecourse for the first time since 2015, having been staged at Chantilly Racecourse in 2016 and 2017 while Longchamp was closed for major redevelopment. It was the 97th running of the Prix de l'Arc de Triomphe.