It was operated by the Tavannes–Noirmont Railway (French: "Chemin de fer Tavannes–Noirmont", CTN), which was formed in 1913 from the merger of the Tramelan-Tavannes Railway ("Chemin de fer de Tramelan–Tavannes", TT) and the Tramelan-Breuleux-Noirmont Railway ("Chemin de fer Tramelan–Breuleux–Noirmont", TBN).