| Le Locle–Les Brenets | |
| Image Alt: | White-red railcar at station |
| Owner: | Transports publics Neuchâtelois |
| Linelength Km: | 4.1 |
| Linenumber: | 224 |
| Electrification: | 1500 V DC overhead catenary |
| Map State: | uncollapsed |
The Le Locle–Les Brenets line is a railway line in the canton of Neuchâtel in Switzerland. It runs from, where it has a cross-platform interchange with the standard gauge Neuchâtel–Le Locle-Col-des-Roches line of Swiss Federal Railways, to . The line was originally built by the and opened on 1 September 1890. Today, it is operated by the Transports publics Neuchâtelois. On 24 July 2020, the canton of Neuchâtel announced the line will closed in 2025, to be replaced by an electric bus service that will use the Petits-Monts railway tunnel.[1]