Llangynllo railway station is a countryside stop in Powys about 5 miles west of Knighton, on the Heart of Wales Line.

[1] This is a request stop, where passengers have to signal to the driver to board or alight from the train.

The highest point on the line (about 980 ft (299 m) above sea level) is a short distance to the north of the station, near to the southern portal of the 647 yd (592 m) long Llangynllo tunnel.

The platform is low, which has caused access issues for passengers in the past (a set of wooden steps was required to join or alight from modern stock)[3] but an easy access ramp has since been fitted to help passengers when joining or leaving trains.

[4] A disused platform is still visible opposite the active one, as a passing loop was located here until the early 1960s.