Ostrov, Constanța
| Ostrov | |
|---|---|
| Location in Constanța County | |
| Coordinates: 44°6′33″N 27°21′50″E / 44.10917°N 27.36389°E | |
| Country | Romania | 
| County | Constanța | 
| Subdivisions | Ostrov, Almălău, Bugeac, Esechioi, Galița, Gârlița | 
| Government | |
| • Mayor (2020–2024) | Niculae Dragomir (PSD) | 
| Area | 171.30 km2 (66.14 sq mi) | 
| Population  (2021-12-01) | 4,586 | 
| • Density | 27/km2 (69/sq mi) | 
| Time zone | EET/EEST (UTC+2/+3) | 
| Vehicle reg. | CT | 
| Website | www | 
Ostrov is a commune in Constanța County, Northern Dobruja, Romania.