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Cognomen Kaknjo (Kaknjo
) , all around the world, is a rare last name. The cognomen Kaknjo is characteristic of Bosnia and Herzegovina, where it is quite a common surname, Croatia, where it is a very rare surname, and Netherlands. Not in comparison with a country's population, it is the most numerous in Bosnia and Herzegovina, Netherlands, and Italy.
| VARIANT | COUNTRY |
|---|---|
| Kaknjo | Bosnia and Herzegovina, Netherlands, Italy, United States, Croatia |