Cognomen Nelzén (Nelzén 
) , all around the world, is a very rare family name. The surname Nelzén is habitual in Northern Europe, particularly Sweden, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Nelzén | Sweden |
| oskar nelzén researcher |
|
|
| olle nelzén researcher (ORCID 0000-0002-2631-2761) |
|