Surname Amaoka (Amaoka 
) , all over the world, is a rare family name. The family name Amaoka is habitual in Brazil, where it is a very rare surname, China, where it is an extremely rare surname, and the United States. Likewise, Amaoka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Amaoka | Brazil, China, United States |