| Thung Song Junction | |
| Native Name: | ชุมทางทุ่งสง |
| Native Name Lang: | th |
| Address: | Pak Phraek Subdistrict, Thung Song District |
| Borough: | Nakhon Si Thammarat Province |
| Country: | Thailand |
| Operator: | State Railway of Thailand |
| Manager: | Ministry of Transport |
| Distance: | 757.081NaN1 from Thon Buri |
| Platforms: | 3 |
| Tracks: | 8 |
| Structure: | Concrete building |
| Code: | ทส. |
| Classification: | Class 1 |
| Opened: | January 1914 |
| Mapframe: | yes |
| Mapframe-Zoom: | 9 |
Thung Song Junction railway station is a railway station located in Pak Phraek Subdistrict, Thung Song District, Nakhon Si Thammarat. This station is a class 1 railway station, located 757.081NaN1 from Thon Buri railway station. This station is the junction for the Southern Line mainline and the Kantang Branch Line to Trang Province. On site, there is a 277 class decommissioned steam locomotive, built by Hanomag.
The station opened in January 1914, on the Southern Line section Huai Yot–Thung Song Junction. In October 1914, the line extended southwards to Phatthalung, and in February 1915, the line extended northbound to Ban Na.