| Cérou | |
| Pushpin Map: | France#France Occitanie |
| Source1 Location: | near Saint-Jean-Delnous |
| Source1 Coordinates: | 44.0558°N 2.4758°W |
| Mouth Location: | Aveyron |
| Mouth Coordinates: | 44.1392°N 1.8756°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | France |
| Length: | 87.1km (54.1miles) |
| Source1 Elevation: | 530m (1,740feet) |
| Mouth Elevation: | 128m (420feet) |
| Discharge1 Avg: | 4.13m3/s |
| Basin Size: | 503km2 |
The Cérou (French: le Cérou) is an 87.1km (54.1miles) long river in the Aveyron and Tarn departments in southern France. Its source is at Saint-Jean-Delnous, 1.8km (01.1miles) northwest of the village. It flows generally west-northwest. It is a left tributary of the Aveyron, into which it flows at Milhars, 1.4km (00.9miles) north of the village.
It flows generally west through the following departments and communes, ordered from source to mouth:
The Farruel (12.5 km), the Boutescure (15.4 km), the Céroc (17.6 km), the Candou, the Céret (28.5 km), the Zère, the Aymer (12,2 km), and the Bonnan.