Line A (Ligne A) is a line on the Lyon Metro that runs between Perrache and Vaulx-en-Velin La Soie. It was constructed using the cut-and-cover method, and went into service on 2 May 1978. It, together with Line B, were the inaugural lines of the Lyon Metro. An extension of Line A from Laurent Bonnevay, Astroballe to Vaul-en-Velin, La Soie opened in 2007. The line currently serves 14 stations, and is 9.2 kilometres (5.7 mi) long. Line A trains run on tires rather than steelwheels; it is a rubber-tired metro line.
Line A was extended 1 kilometre (0.62 mi) eastwards from Laurent Bonnevay to Vaulx-en-Velin La Soie (1 station) to provide connection with the new express tram line to St Exupéry Airport, called Rhônexpress as well as Tram 3. This extension opened on 2 October 2007 and cost €53 million.