| Country | France |
|---|---|
| Mouth | Rognon |
| Mouth coordinates | 47.6408°N 6.5718°E |
| Progression | Rognon→ Scey→ |
| Length | 10.4 km (6.5 mi) |
The Fau is a 10.4 km river in the Haute-Saône department in the Bourgogne-Franche-Comté region of eastern France. It rises in Étobon and flows generally west to join the Rognon in Moffans-et-Vacheresse.[1]