Surname Niwak (Niwak 
) , in the entire world, is a very rare family name. The surname Niwak is habitual in Poland, where it is a rare surname, Philippines, where it is an extremely rare surname, and the United States. Very seldom, Niwak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Niwak | India, United States, Poland, Philippines |