Globally, Köllensperger-Nielsen (Köllensperger-Nielsen 
) is an extremely rare unknown gender forename. Predominantly, Köllensperger-Nielsen is the last name as well as the forename. Parts of the name also exists independently as a last name Köllensperger, and a last name Nielsen.
| VARIANT | COUNTRY |
|---|---|
| Köllensperger-Nielsen | Germany |