| Name | Ostroh |
| Office head of government | |
| Mayor | |
| Image |  |
| Area (m²) | 10,900,000 |
| Date founded | After 1100 |
| Elevation (m) | 195 |
| Country | Ukraine |
| Administrative division | Rivne Oblast |
| Continent | Europe |
| Latitude (°) | 50.3333320618 |
| Waterbody | |
| Longitude (°) | 26.5166664124 |
| Website | http://www.ostroh.rv.ua/ |
| Population (people) | 15,642 (2017) |
| Demonym |