Family name Okuyama (Okuyama 
, 奥山 , Окуяма 
) , globally, is quite a rare last name. The surname Okuyama is characteristic of Brazil, where it is a rare surname, Japan, and Hong Kong. Not in comparison with a country's population, it is commonest in Brazil, Japan, and the United States. Likewise, Okuyama is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Okuyama | Japan, China, Taiwan, United States, Brazil |
| 奥山 | China |
| Окуяма | Russia, Ukraine |
| shunki okuyama botanist (1909-1998) (b. 1909) |
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| hōseki okuyama (b. 1937) |
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| masanori okuyama (b. 1946) |
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| yoko okuyama Japanese economist |
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| ryosuke okuyama researcher |
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| nádia calvo martins okuyama researcher (ORCID 0000-0002-2131-6800) |
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| toru okuyama researcher (ORCID 0000-0003-0504-6406) |
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| harumi okuyama researcher (ORCID 0000-0003-3332-4565) |
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| toshinori okuyama researcher (ORCID 0000-0002-9893-4797) |
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| yumi okuyama researcher (ORCID 0000-0002-1979-9532) |
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| hiroshi okuyama researcher ORCID ID = 0000-0002-6031-0612 |
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| kenji okuyama researcher, Osaka University, JP |
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| ayako okuyama researcher |
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| ryuhei okuyama researcher |
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| katsushi okuyama researcher |
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