The Bernese Jura Railway (Chemins de fer du Jura bernois, abbreviated Jura bernois, JB) was a railway company in Switzerland. The company was called the Jura–Bern–Luzern (Jura–Bern–Lucerne, JBL) from 1 July 1884. The Jura–Bern–Lucerne merged with the Western Switzerland–Simplon Railways (Suisse-Occidentale–Simplon, SOS) to form the Jura–Simplon Railway (Jura-Simplon-Bahn), JS) on 1 January 1890.