Llanishen railway station () is a railway station serving the area of Llanishen in Cardiff, south Wales. It is a stop on the Rhymney Line of the Valley Lines network.
The Monday to Saturday daytime service pattern is six trains an hour southbound to : two continue to , three to and one to . Northbound six trains an hour run to , with four continuing to and two of those going on to . The frequency decreases in the evening.
On Sundays, the service pattern is two trains an hour southbound to and , and two an hour northbound to , with one continuing to .