Cognomen Nielk (Nielk 
) , in all the world, is a very rare family name. The surname Nielk is characteristic of France, where it is a very rare surname, Germany, and the United States, where it is an extremely rare surname. Much less frequently, Nielk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nielk | Brazil, France, United States, Germany |
| francesca h. nielk HU (b. 1994) |
|