Surname Ruzdija (Ruzdija 
) , in all the world, is a very rare cognomen. The family name Ruzdija is habitual in Slovenia, where it is a rare surname, Germany, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, Ruzdija is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ruzdija | Italy, Germany, United States, Slovenia |