| RER Vaud | |
|---|---|
 RER Vaud S3 train at Prilly-Malley in 2012 | |
 | |
| Overview | |
| Native name | French: Réseau express régional vaudois |
| Locale | Vaud |
| Transit type | S-Bahn |
| Number of lines | 10 |
| Operation | |
| Began operation | December 2004 |
| Operator(s) | Swiss Federal Railways (SBB) |
| Technical | |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
RER Vaud (French: Réseau express régional vaudois) is an S-Bahn network in the canton of Vaud in Switzerland. It is centered on Lausanne and began operating in December 2004.