Pant Glas (Welsh for Green Hollow - literally "Blue Hollow" in modern Welsh - in Old Welsh "Glas" meant both Green and Blue) is a hamlet on the A487 road in Gwynedd, Wales. Historically in Caernarfonshire, it is located approximately 10 miles (16 km) south of Caernarfon, 9 miles (14 km) miles north-west of Porthmadog, and 10 miles (16 km) north-east of Pwllheli. Nearby is the former Pant Glas railway station, which was closed as well as the Carnarvonshire Railway in 1964. The railway has since been replaced with the Lôn Eifion cycle track.