Cognomen Остроушкин (Остроушкин 
) , all around the world, is a very rare last name. The surname Остроушкин is habitual in Russia, where it is a very rare surname, and Kazakhstan. Very seldom, Остроушкин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Остроушкин | Kazakhstan, Russia |