| Type: | commune |
| County: | Brăila |
| Cazasu | |
| Leader Name: | Elena Coadă |
| Leader Party: | PNL |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 45.2833°N 81°W |
| Elevation: | 13 |
| Area Total: | 26.88 |
| Population Total: | auto |
| Postal Code: | 817181 |
| Area Code: | +(40) 239 |
Cazasu is a commune located in Brăila County, Muntenia, Romania. It is composed of a single village, Cazasu. It was part of Tudor Vladimirescu Commune until 2003, when it was split off to form a separate commune.