Family name Ерослав (Ерослав 
, Yeroslav 
, Eroslav) , worldwide, is a very rare cognomen. The surname Ерослав is habitual in Israel, where it is a very rare surname, Nicaragua, and Mexico, where it is an extremely rare surname. More prevalently, Ерослав is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ерослав | Belarus, Russia |
| Yeroslav | Costa Rica, Nicaragua, Israel, United States, Mexico |