| Canal de Neufossé | |
| Total Rise: | 18km (11miles) |
| Start Point: | Arques |
| End Point: | Aire-sur-la-Lys |
| Begin Coord: | 50.737°N 2.2972°W |
| End Coord: | 50.6443°N 2.4108°W |
| Branch Of: | Canal Dunkerque-Escaut |
| Connects To: | Aa River in Arques, Canal d'Aire in Aire-sur-la-Lys. |
The Canal de Neufossé (pronounced as /fr/) is a French canal connecting the Aa River in Arques to the Canal d'Aire in Aire-sur-la-Lys. It is a segment of the Canal Dunkerque-Escaut. In 1760, the Neufossé canal was built to link the river Lys to the Aa, and give Lille and other inland towns a French route to the sea.