| Syre | |
| Mouth Coordinates: | 49.6986°N 6.4811°W |
| Subdivision Type1: | Country |
| Length: | 30km (20miles) |
| Source1 Elevation: | 283m (928feet) |
| Basin Size: | 193km2 |
The Syre or Syr (lb|Sir) is a river flowing through Luxembourg, joining the Moselle in Mertert. It flows through Schuttrange, Roodt-sur-Syre, Betzdorf and Manternach.