RER Jura
| RER Jura | |
|---|---|
| Overview | |
| Native name | French: Réseau express régional Jura |
| Locale | |
| Transit type | S-Bahn |
| Number of lines | 4 |
| Operation | |
| Began operation | 14 December 2025 |
| Operator(s) | Swiss Federal Railways |
| Technical | |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
RER Jura (French: Réseau express régional Jura) is an S-Bahn network in the canton of Jura in Switzerland. It is centered on Porrentruy and began operating in December 2025.