Rail transport in Malaysia consists of heavy rail, light rapid transit (LRT), mass rapid transit(MRT), monorails, airport rail links and a funicular railway line. Heavy rail is mostly used for intercity services and freight transport as well as some urban public transport, while rapid transit rails are used for intracity urban public transport in the capital city of Kuala Lumpur and the surrounding Klang Valley region. There are two airport rail link systems linking Kuala Lumpur with the Kuala Lumpur International Airport (KLIA) and Sultan Abdul Aziz Shah Airport. The only-functioning monorail line in the country is also used for public transport in Kuala Lumpur, while the only funicular railway line is available in Penang.

KTM Intercity are diesel-hauled intercity train services in Peninsular Malaysia, operated by Keretapi Tanah Melayu Berhad (KTMB). Services operate along the East Coast Line between Tumpat and Gemas and on towards JB Sentral on the West Coast Line. The former Intercity services along the West Coast Line between Padang Besar in the north and Gemas have been converted to the KTM ETS service.