Wang Duan railway station is a railway station located in Huai Sai Subdistrict, Prachuap Khiri Khan City, Prachuap Khiri Khan. It is a class 3 railway station located 318.272 km (197.8 mi) from Thon Buri railway station. It is the location of the narrowest part of Thailand, at about 10 km wide.

• Ordinary 254/255 Lang Suan-Thon Buri-Lang Suan

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

11°41′21″N 99°43′24″E / 11.6891°N 99.7234°E / 11.6891; 99.7234