The Saundersfoot Railway was a Welsh industrial narrow-gauge railway in Pembrokeshire, Wales, built between 1830–1834, to connect Saundersfoot harbour to the local coal mines. Trading began on 1 March 1834 and within a few years it comprised a small network of over 4 miles (6.4 km) along the coast from Saundersfoot to Wisemans Bridge and on to the collieries at Stepaside and Kilgetty, and later, running inland to Thomas Chapel near Begelly. It provides the first example in Pembrokeshire of the joint construction of a harbour and tramway, and remained independent until it closed in 1939.