Surname Еронен (Eronen 
, Еронен 
) , all over the world, is quite a rare cognomen. The last name Еронен is characteristic of Northern Europe, particularly Finland, where it is quite a common surname, Sweden, where it is a rare surname, and Norway. In absolute terms, it is the most numerous in Finland, Sweden, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Eronen | Germany, Sweden, Finland, United States, Canada |
| Еронен | Russia |