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Globally, Oñasa (Oñasa ) is an extremely rare unknown gender first name. Much more prevalently, Oñasa is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Oñasa | Philippines |
Sarah, Jenes, Charry, Dhixter, Joefer, Nestor, Ferdie, Jagelia, Elmar Christine, and Tyrone Joseph