Cognomen Rodjak (Rodjak 
) , throughout the world, is quite a rare last name. The surname Rodjak is habitual in Indonesia, where it is a rare surname, Croatia, and Germany, where it is an extremely rare surname. Much less frequently, Rodjak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rodjak | Croatia, Germany, Indonesia, United States |