| 273 series | |
|---|---|
 Set Y2 in April 2024 | |
| In service | 2024–present |
| Manufacturer | |
| Replaced | 381 series |
| Constructed | 2023–2024 |
| Entered service | 6 April 2024 |
| Number built | 44 vehicles (11 sets) |
| Formation | 4 cars per trainset |
| Fleet numbers | Y1–Y11 |
| Operators |  JR West |
| Lines served | |
| Specifications | |
| Traction system | Variable frequency |
| Electric system(s) | 1,500 V DC (overhead catenary) |
| Current collector(s) | Pantograph |
| Track gauge | 1,067 mm (3 ft 6 in) |
The 273 series (273系) is a Japanese train type operated by West Japan Railway Company (JR West) on Yakumo limited express services on the Sanyo Main Line, Hakubi Line and Sanin Main Line. Announced on 16 February 2022, it is intended to replace the 381 series.