Sai Yai railway station is a railway station located in Tham Yai Subdistrict, Thung Song District, Nakhon Si Thammarat. It is a class 3 railway station located 762 km (473.5 mi) from Thon Buri railway station.

• Local No. 445/446 Chumphon-Hat Yai Junction-Chumphon
• Local No. 447/448 Surat Thani-Sungai Kolok-Surat Thani

• Ichirō, Kakizaki (2010). Ōkoku no tetsuro: tai tetsudō no rekishi. Kyōto: Kyōtodaigakugakujutsushuppankai. ISBN 978-4-87698-848-8.^{[page needed]}
• Otohiro, Watanabe (2013). Tai kokutetsu yonsenkiro no tabi: shasō fūkei kanzen kiroku. Tōkyō: Bungeisha. ISBN 978-4-286-13041-5.^{[page needed]}