US Boulogne
| Full name | Union Sportive Boulogne Côte d'Opale | |
|---|---|---|
| Founded | 1898 | |
| Ground | Stade de la Libération, Boulogne-sur-Mer | |
| Capacity | 9,534 | |
| President | Vincent Boutillier | |
| Manager | Fabien Dagneaux | |
| League | Ligue 2 | |
| 2024–25 | Championnat National, 3rd of 18 (promoted) | |
| Website | www | |
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Union Sportive Boulogne Côte d'Opale (French pronunciation: [ynjɔ̃ spɔʁtiv bulɔɲ kot dɔpal]; commonly referred to as US Boulogne, USBCO (French pronunciation: [y.ɛs.be.se.o]) or frequently, simply Boulogne) is a French association football club based in the commune of Boulogne-sur-Mer. The club was founded in 1898 and currently plays in Ligue 2, the second level of French football, having been promoted from the Championnat National at the end of 2024–25 season due to AC Ajaccio being relegated for financial reasons.
The club was formed in 1898 and its achievements are comparatively minor, with their biggest feat to date consisting of reaching the semi-finals during the 1936–37 edition of the Coupe de France, and one Ligue 1 season in 2009–10. Boulogne play their home matches at the Stade de la Libération, which seats 15,004, having previously seated only 7,000 prior to its renovation in 2007.