The Lugano –Ponte Tresa Railway or Ferrovia Lugano–Ponte Tresa (FLP) is a local railway line in the Italian speaking canton of Ticino, in south-east Switzerland. The line links the town of Lugano with Ponte Tresa, and is 12.3 kilometres (7.6 mi) long. It is built to metre gauge (3 ft 3+3⁄8 in gauge), and is electrified on the overhead system at 1200 volts DC. It is operated by the Ferrovie Luganesi company.

The FLP opened in 1912 and is the last working line of an interconnected network including two other suburban lines, the Lugano–Tesserete railway and the Lugano–Cadro–Dino railway, and the urban tramways of Lugano. There are proposals to extend the line back into some of the areas formerly covered by this network.

The FLP is a member of the Arcobaleno tariff network and passenger services are designated S60.