Thirroul is a railway station on the South Coast Line of the CityRail interurban network in New South Wales, Australia. It serves the suburb of Thirroul, one of the most northerly suburbs of Wollongong. The station has three platforms, one side platforms for trains to Sydney, a platform for trains to Wollongong, Port Kembla and Bomaderry, and a third for terminating trains. It is served by one train per hour during the off-peak to and from Sydney (with more trains during peak hours), but it is also a terminus for local Wollongong services which run through the northern suburbs of Wollongong and out on the branch line to Port Kembla. These services are in use especially during weekday off-peak periods, and lets the Intercity trains skip through the Wollongong suburbs.