Cognomen Knyziak (Knyziak 
) , around the globe, is a rare family name. The family name Knyziak is habitual in Poland, where it is a rare surname, and Canada, where it is an extremely rare surname. Also, Knyziak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Knyziak | Poland, Canada |
| zygmunt knyziak PL (b. 1927) |
|