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Cognomen Niumaia (Niumaia ) , throughout the world, is an extremely rare surname. Much more frequently, Niumaia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Niumaia | Fiji |
Digo, Naitini, Karavaki, Tabunakawai, Turaganicolo, and Waqanivalu