The Tavannes–Noirmont railway line is a metre-gauge railway line in western Switzerland. The Tramelan-Tavannes Railway (French: Chemin de fer de Tramelan à Tavannes) opened the first section in 1884; the Tramelan – Breuleux – Noirmont Railway (French: Compagnie du chemin de fer Tramelan – Breuleux – Noirmont) completed the line between Tramelan and Le Noirmont in 1913. The line was electrified in 1913 and has belonged to the Chemins de fer du Jura (CJ) since 1944.