Port Dinorwic railway station was the name of two railway stations located on the Bangor and Carnarvon Railway near the village of Port Dinorwic (now Y Felinheli), Gwynedd, Wales. The first station was opened in 1852 and closed in 1874. A replacement station with the same name was opened later in 1874. This closed to passengers in 1960 and to all traffic in 1964. The main station building is still in existence and was listed Grade II in 1997.