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Cognomen Yasuoka (Yasuoka
, Ясуока) , all around the world, is a rare family name. The surname Yasuoka is characteristic of Hong Kong, where it is a rare surname, Japan, where it is a very rare surname, and Peru. Not in comparison with a country's population, it is commonest in Japan, Indonesia, and Brazil. Much less frequently, Yasuoka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yasuoka | Brazil, Hong Kong, Japan, Indonesia, United States |