Montreux is a municipality in the district of Riviera-Pays-d'Enhaut in the canton of Vaud in Switzerland.
It is located on Lake Geneva at the foot of the Alps and has a population, as of December 2012, of 25,456 and nearly 90,000 in the agglomeration.
The earliest settlement was a Late Bronze Age village at Baugy. Montreux lies on the north east shore of Lake Geneva at the fork in the Roman road from Italy over the Simplon Pass, where the roads to the Roman capital of Aventicum and the road into Gaul through Besançon separated. This made it an important settlement in the Roman era. A Roman villa from the 2nd-4th centuries and a 6th-7th century cemetery have been discovered.