The Montreux –Glion –Rochers-de-Naye railway line is an electrically operated rack railway in Switzerland with a track gauge of 800 mm (2 ft 7+1⁄2 in). The line connects the resort of Montreux, on the shores of Lake Geneva , with the summit of the Rochers de Naye mountain. The line operates via the village of Glion, on the mountainside above Montreux, where it connects with the Territet–Glion funicular.

The line was originally built as two separate lines by two different companies, the Chemin de fer Glion–Rochers-de-Naye (GN) and the Chemin de fer Montreux–Glion (MGI). Today, the line is owned and operated by Transports Montreux–Vevey–Riviera.

Since 2017, the line is operated with original Belle Epoque carriages preserved and restored by the company Montreux-Oberland Bernois (MOB).