| Porrentruy–Bonfol | |
| Image Alt: | Red railcar with white stripe sitting at a station |
| Stations: | 4 |
| Owner: | Chemins de fer du Jura |
| Linelength Km: | 10.9 |
| Linenumber: | 238 |
| Electrification: | 15 kV/16.7 Hz AC overhead catenary |
| Map State: | uncollapsed |
The Porrentruy–Bonfol railway line is a standard gauge railway line in the canton of Jura, Switzerland. It runs 10.9km (06.8miles) from a junction with the Delémont–Delle railway line at northeast to . Chemins de fer du Jura owns and operates the line. The line formerly extended to the French border at Pfetterhouse.
The (RPB) opened the line between and on 14 July 1901. On 1 November 1910, the line was extended 2.5km (01.6miles) to what was then the German border near Pfetterhouse and a junction with the .
The RPB was one of four companies that merged on 1 January 1944 to form the Chemins de fer du Jura, which has owned and operated the line ever since. Cross-border passenger service north of Bonfol ended on 14 February 1946; the line north of Bonfol was abandoned altogether on 4 January 1970. The line from Porrentruy to Bonfol was electrified on 18 May 1952.
Chemins de fer du Jura undertook a rehabilitation of the line between 2020 and 2022, including new platforms at all three stations and a rebuilding of the bridge over the Allaine.[1] [2]
Chemins de fer du Jura operates hourly passenger service over the route, with additional trains during peak-hours on weekdays. Trains are scheduled to connect with further services to and from and .[3]