Cognomen Najduk (Najduk 
) , globally, is a rare surname. The surname Najduk is characteristic of Poland, where it is a rare surname, Croatia, and Germany, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Poland, Germany, and the United States. Also, Najduk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Najduk | Germany, Canada, Poland, United States, Croatia |