Ubon Ratchathani Main Line
| Ubon Ratchathani Main Line | |
|---|---|
| Overview | |
| Status | Operational | 
| Owner | State Railway of Thailand | 
| Locale | |
| Termini | |
| Service | |
| Type | Inter-city rail | 
| System | Northeastern Line | 
| Operator(s) | State Railway of Thailand | 
| Depot(s) | 
 | 
| History | |
| Opened | 26 March 1896 | 
| Technical | |
| Line length | 575.10 km (357.35 mi) | 
| Track gauge | 1,000 mm (3 ft 3+3⁄8 in) metre gauge | 
Ubon Ratchathani Main Line or Lower Isan Line is a railway line in Thailand. It runs from Ban Phachi Junction in the central to Ubon Ratchathani railway station in the lower northeastern, passes many provinces.