Surname Mardjonovic (Mardjonovic 
) , in all the world, is a very rare cognomen. The family name Mardjonovic is characteristic of Montenegro, where it is quite a rare surname, Slovenia, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mardjonovic | Slovenia, Germany, United States, Montenegro |