Last name Hrnkas (Hrnkas 
) , throughout the world, is an extremely rare surname. The family name Hrnkas is habitual in Croatia, where it is a very rare surname, and Brazil, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Hrnkas | Croatia, Brazil |
| jozo hrnkas Croatian Righteous Among the Nations, BE (b. 1900) |
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| katica hrnkas Croatian Righteous Among the Nations, BE (b. 1903) |
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