| Clubname: | GSI Pontivy |
| Fullname: | Garde Saint-Ivy Pontivy |
| Founded: | 1909 (Gymnastics section) 1935 (football section) |
| Ground: | Stade Municipal du Faubourg de Verdun Pontivy, France |
| Capacity: | 3,140 |
| Chairman: | Philippe Le Mestre |
| Manager: | Stéphane Le Garrec |
| League: | National 3 Group E |
| Season: | 2022–23 |
| Position: | National 3 Group K, 10th |
| Website: | https://www.gsi-pontivy.com |
| Pattern B1: | _greenstripes |
| Leftarm1: | FFFFFF |
| Body1: | FFFFFF |
| Rightarm1: | FFFFFF |
| Shorts1: | FFFFFF |
| Socks1: | 21823b |
| Pattern B2: | _unknown |
GSI Pontivy (fr|Garde Saint-Ivy Pontivy) is a French football club based in Pontivy, Morbihan. It was founded in 1935. They play at the Stade Municipal du Faubourg de Verdun, which has a capacity of 3,200. The colours of the club are green and white.
For the 2018–19 season, the club plays in the Championnat National 3.