Khao Chum Thong Junction railway station is a railway station located in Khuan Koei Subdistrict, Ron Phibun District, Nakhon Si Thammarat.

Khao Chum Thong Junction opened as a junction railway station in October 1914, along the Thung Song Junction–Phatthalung section of the Southern Line.

Initially, the station was called "Sam Yaek Nakhon" (lit.

Three-way Junction for Nakhon [Si Thammarat]).

This junction railway station was cited in the 1965 Thai action film Chum Thang Khao Chum Thong as a backdrop of story and the theme song, which shares the same Thai title as the film and was performed by Rapin Phutai, also became a memorable luk thung (Thai country song) hit.