| Cofio | |
| Source1 Location: | Sierra de Malagón |
| Mouth Location: | San Juan Reservoir |
| Subdivision Type1: | Country |
| Subdivision Name1: | Spain |
| Length: | 51km (32miles) |
| Basin Size: | 638.2km2 |
| Discharge1 Location: | Foronomic station #3180 (San Martín de Valdeiglesias) |
| Discharge1 Min: | 0.68 m3/s |
| Discharge1 Avg: | 4.54 m3/s |
| Discharge1 Max: | 11.10 m3/s |
| Extra: | Tagus Basin |
Cofio River is a tributary of Alberche River, Spain. Featuring a total length of 51 km, it drains a basin area of 638.2 km2.[1]