Dduallt railway station (English: Black hill) (pronounced [ˈðɨ.aɬt]) is a passenger station on the narrow gauge Ffestiniog Railway in northwest Wales, which was built in 1836 to carry dressed slate from Blaenau Ffestiniog to Porthmadog for export by sea. Dduallt is at a height of 540 feet (160 m) and a distance of just over 9.5 miles (15.3 km) from Porthmadog.