| Avre | |
| Map: | Avre (rivière).png |
| Mouth Coordinates: | 49.8833°N 2.3403°W |
| Subdivision Type1: | Country |
| Length: | 66km (41miles) |
| Source1 Elevation: | 280m (920feet) |
| Discharge1 Avg: | 5.1m3/s |
| Basin Size: | 1150km2 |
The Avre (pronounced as /fr/) is a river in Picardy, France, and is the principal tributary, from the left side, of the River Somme.
At long, it drains a relatively important basin of 1,150 km² but only flows at best 5,1 m³/s near its confluence at Longueau.[1]
Its principal tributaries are: the Noye, joining at Boves, the Trois Doms joining at Pierrepont-sur-Avre, the Brache joining at Braches and the Luce at Berteaucourt-les-Thennes.