| Clubname: | US Cognac |
| Fullname: | Union Sportive Cognaçaise |
| Colours: | Red and white |
| Founded: | 1899 |
| Sport: | Rugby union |
| League: | Rugby Pro D2 |
| Ground: | Stade Jean-Martinaud, Cognac |
| Web: | None |
Union Sportive Cognaçaise is a French rugby union club, based in Cognac in the Charente département (Nouvelle-Aquitaine region). They play at the Parc des Sports (capacity 2,800), and wear white and red.
They were founded on 2 December 1898 and regularly competed in the first division in the 1950s and 1960s. They played in the 1954 French championship final, going down narrowly to FC Grenoble 3-5. They are currently competing in the fifth level of the French league system, Fédérale 3.