Cognomen Kajinic (Kajinic 
) , all over the world, is a very rare surname. The family name Kajinic is characteristic of Switzerland, where it is a rare surname, Croatia, where it is a very rare surname, and Denmark. Not in comparison with a country's population, it is the most numerous in Switzerland, Germany, and Denmark.
| VARIANT | COUNTRY |
|---|---|
| Kajinic | Switzerland, United States, Denmark, Germany, Croatia |