Last name Okiyama (Okiyama 
) , across the world, is a rare cognomen. The surname Okiyama is characteristic of Brazil, where it is a very rare surname, Australia, and the United States. Much less frequently, Okiyama is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Okiyama | Brazil, Japan, Australia, United States, China |
| yūji okiyama (b. 1959) |
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| isao okiyama Japanese amateur wrestler, JP |
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| r. okiyama researcher |
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| yoshio okiyama researcher |
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| naoko okiyama researcher |
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