| Official Name: | Ostrovo |
| Native Name: | Острово |
| Subdivision Type: | Country |
| Subdivision Type1: | Provinces (Oblast) |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Pushpin Map: | Bulgaria |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location of Ostrovo |
| Leader Title: | Kmet |
| Postal Code Type: | Postal Code |
| Subdivision Name1: | Razgrad |
| Population Total: | 2968 |
| Population As Of: | March 2016 |
| Elevation M: | 298 |
| Postal Code: | 7326 |
| Area Code: | 084462 |
| Leader Name: | Behçet Hacıveli |
Ostrovo (Bulgarian: Острово; Turkish: Adaköyü) is a village in northeastern Bulgaria, part of Razgrad Province, located in the geographic region of Ludogorie. As of March 2016, the village has a population of 2968 inhabitants.[1]
See main article: Zavet Municipality.
The village has a community center "Father Paisii", primary school "Hristo Botev" and kindergarten "Joy". 3½ km east of the village is a hunting farm "Voden". The local football club Adaspor competes in the A district football group.