Cognomen Острой (Острой 
) , across the world, is a very rare last name. The surname Острой is characteristic of Kazakhstan, where it is a very rare surname, Ukraine, where it is an extremely rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Острой | Kazakhstan, Ukraine, Russia |
| ольга семёновна острой Russian bibliographer (1929-2020), RU (b. 1929) |
|