Penarth Dock was a port and harbour which was located on the south bank of the mouth of the River Ely, at Penarth, Glamorgan, Wales. It opened in 1865 and reached its heyday before World War I, after

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