| Wiltz | |
| Map: | Wiltz.png |
| Mouth Coordinates: | 49.9236°N 6.0491°W |
| Subdivision Type1: | Country |
| Length: | 42km (26miles) |
The Wiltz (Luxembourgish; Letzeburgesch: Wolz, in Luxembourgish; Letzeburgesch pronounced as /volts/) is a river flowing through Belgium and Luxembourg, joining the Sauer at Goebelsmuhle. The Clerve is a tributary of the Wiltz.