| Ravillou | |
| Pushpin Map: | France#France Nouvelle-Aquitaine |
| Subdivision Type1: | Country |
| Length: | 13km (08miles) |
| Mouth Coordinates: | 45.3131°N 0.9883°W |
The Ravillou is a 13 km long river in the Dordogne department, France. It is a right tributary of the Loue, part of the Dordogne basin. The river rises in the commune of Dussac and runs through Saint-Germain-des-Prés before emptying into the Loue northwest of Coulaures.
On the night of June 13 and 14, 2007, a flash flood caused by a storm turned the Ravillou and its tributary the Merdanson into devastating torrents, that damaged the town of Saint-Germain-des-Prés and the bridge across the Ravillou.