Penarth railway station is the railway station serving the town of Penarth in the Vale of Glamorgan, South Wales. It is the terminus of Network Rail's Penarth branch running from Cogan Junction to Penarth station, 1 mile 12 chains from the junction and 2 miles 67 chains south of Cardiff Central station. The Penarth branch ran from Cogan Junction to Biglis Junction, a rail mileage of 5 miles 65 chains and was officially closed beyond Penarth after the last passenger train ran on Saturday 4 May 1968.

Penarth is a town and community in the Vale of Glamorgan, Wales, approximately 3 miles (4.8 km) south of Cardiff city centre on the west shore of the Severn Estuary at the southern end of Cardiff Bay.