The Waldenburg railway is a narrow-gauge light rail system in the canton of Basel-Landschaft, Switzerland. The 13.1-kilometre (8.1 mi) long single-track line runs from Liestal, the capital of the canton, to Waldenburg, with stops in Bubendorf, Hölstein, Niederdorf, and Oberdorf. It connects to SBB train services in Liestal railway station. The line was temporarily closed between April 2021 and December 2022 for modernisation and conversion to metre gauge.

Liestal, formerly spelled Liesthal, is the capital of Liestal District and the canton of Basel-Landschaft in Switzerland, 17 km (11 mi) south of Basel.