Trehafod railway station is a railway station serving the township of Trehafod in Rhondda Cynon Taf, Wales. It is located on the Rhondda Line, between Pontypridd and Porth, from Cardiff Docks (Bute Town).
The first station was opened by the Taff Vale Railway on 30 August 1861, and was originally named Havod. The Welsh spelling Hafod was adopted in November 1890. It was resited on 17 October 1892, and altered to Trehafod on 1 January 1905.
On 18 July 1889, the Barry Railway opened their main line between Hafod Junction and their new docks at Barry and immediately began carrying coal from the Rhondda pits along the new line. The route was not served by passenger trains until 16 March 1896, the new service running between and via Hafod and the Barry Railway's newly opened station at Pontypridd.
Passenger services along the Barry route were diverted via the former Taff Vale station at from 10 July 1930, but coal trains to Barry Docks continued to use the ex-Barry Railway route until June 1951 when they were diverted via .
The station has a ticket machine, a car park and bicycle spaces, waiting shelters and dot matrix departure screens. Access is via a subway and steps, although a ramp provides step-free access to the southbound platform.
<small>The statistics cover twelve month periods that start in April.</small>
Monday-Saturday, there is a half-hourly daytime service to southbound and to northbound, dropping to hourly in the evening. There is a two-hourly service in each direction on Sundays, with southbound trains running through to . On 20 July 2018, previous franchise operator Arriva Trains Wales announced a trial period of extra Sunday services on the Rhondda Line to Cardiff and Barry Island. This was in response to a survey by Leanne Wood and the success of extra Sunday services on the Merthyr Line and the Rhymney Line.
The services from this station were suspended in Summer 2023, due to major route upgrade work being carried out at multiple locations as part of the Valley Lines electrification scheme. A replacement bus service operated between Pontypridd and Treherbert, calling at all local stations, until February 2024. Rail services resumed at the station on 26 February 2024 following completion of the majority of the infrastructure works.