>
Cognomen Rosko (Rosko , Роско , Roško ) , around the globe, is quite a rare surname. The family name Rosko is characteristic of Slovakia, where it is quite a common surname, Croatia, where it is quite a rare surname, and Hungary. Not in comparison with a country's population, the name is most common in the United States, Slovakia, and Hungary. Very seldom, Rosko is the forename as well as the last name.