Last name Jernelius (Jernelius 
) , worldwide, is a very rare cognomen. The surname Jernelius is habitual in Sweden, where it is a rare surname, Norway, where it is a very rare surname, and France, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Sweden, the United States, and France.
| VARIANT | COUNTRY |
|---|---|
| Jernelius | France, Norway, Sweden, United States |