Last name Hros (Rocin 
, Ronzino 
, Roncin 
) , in all the world, is quite a rare cognomen. The cognomen Hros is habitual in Slovakia, where it is quite a rare surname, France, and Italy, where it is a rare surname. Very seldom, Hros is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rocin | Democratic Republic of the Congo, Slovakia, Brazil, India, Venezuela |
| Ronzino | Canada, France, Italy, Germany, United States |
| Roncin | Canada, Spain, Brazil, France, United States |
| Hros | Slovakia, Venezuela, Germany, United States, Czechia |
| roman hros chess player (b. 1996) |
|