Rhônexpress is an express tram-train service which links central Lyon, France, with its airport, Lyon–Saint-Exupéry Airport, and the TGV railway station located there. In 2010, it is one of the most expensive airport-to-city lines in Europe per kilometer.

A tram-train is a type of light rail vehicle that both meets the standards of a light rail system, and also national mainline standards. Tramcars are adapted to be capable of running on streets like an urban tramway but also be permitted operation alongside mainline trains. This allows services that can utilise both existing urban light rail systems and mainline railway networks and stations. It combines the urban accessibility of a tram or light rail with a mainline train's greater speed in the suburbs.