The Blonay–Chamby Museum Railway is a short 3-kilometre-long (1.9 mi) steep but adhesion worked metre gauge heritage railway operated as part of the Blonay–Chamby Railway Museum using vintage steam and electric locomotives and rolling stock. It uses the Blonay–Chamby railway line, originally built by the Chemins de fer électriques Veveysans. It is rail-connected at both ends, at its upper terminus, at Chamby Station on the Montreux–Lenk im Simmental line and at the lower end at Blonay station on the Vevey–Les Pléiades railway line operated by Transports Montreux–Vevey–Riviera.

The Chemins de fer électriques Veveysans (CEV) was a railway company that built and operated narrow gauge electric railway lines from Vevey to Blonay, Chamby, Châtel-St-Denis and Les Pléiades, in Switzerland. It began operations in 1902. The CEV and three other companies merged to become the Transports Montreux–Vevey–Riviera in 2001. The Vevey–Les Pléiades railway line remains in active use.