| Type: | commune |
| County: | Brăila |
| Ulmu | |
| Leader Name: | Vasile Bănică |
| Leader Party: | PNL |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 44.9583°N 27.3108°W |
| Elevation: | 43 |
| Area Total: | 101.61 |
| Population Total: | auto |
| Postal Code: | 817190 |
| Area Code: | +(40) 239 |
Ulmu is a commune located in Brăila County, Muntenia, Romania. It is composed of two villages, Jugureanu and Ulmu.
The commune is situated in the Bărăgan Plain, at an altitude of . It is located in the southwestern part of the county, south of Făurei and southwest of the county seat, Brăila.