Surname Drganc (Drganc 
) , all around the world, is a very rare last name. The surname Drganc is characteristic of Slovenia, where it is a rare surname, Croatia, and Argentina, where it is a very rare surname. Measured by absolute frequency, it is commonest in Slovenia, Argentina, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Drganc | Australia, Croatia, Slovenia, United States, Argentina |