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Cognomen Ounapuu (Ounapuu
) , in the entire world, is a rare last name. The cognomen Ounapuu is characteristic of Northern Europe, particularly Estonia, where it is quite a common surname, Finland, where it is a rare surname, and Latvia. Not in comparison with a country's population, it is commonest in Estonia, Finland, and Canada. Much less frequently, Ounapuu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ounapuu | Estonia, Canada, Latvia, China, Finland |