| Gesse | |
| Map: | Gesse (rivière).png |
| Source1 Location: | Arné |
| Source1 Coordinates: | 43.1547°N 0.4667°W |
| Mouth: | Save |
| Mouth Coordinates: | 43.4344°N 0.8517°W |
| Progression: | Save→ |
| Subdivision Type1: | Country |
| Subdivision Name1: | France |
| Length: | 52.1km (32.4miles) |
| Source1 Elevation: | 550m (1,800feet) |
| Mouth Elevation: | 175m (574feet) |
The Gesse (in French pronounced as /ʒɛs/; Occitan (post 1500);: Gessa) is a 52.1km (32.4miles) long river in the Hautes-Pyrénées, Haute-Garonne and Gers départements, southwestern France. Its source is at Arné, on the plateau de Lannemezan. It flows generally northeast. It is a left tributary of the Save into which it flows at Espaon.
This list is ordered from source to mouth: