Cognomen Motoyama (元山 
, 本山 , Motoyama 
) , around the world, is quite a rare family name. The last name Motoyama is habitual in Brazil, where it is a rare surname, Japan, and China, where it is a very rare surname. More frequently, Motoyama is the forename as well as the last name.
| VARIANT | COUNTRY |
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| 元山, 本山 | China |
| Motoyama | Philippines, Brazil, Japan, United States, China |
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hiyu motoyama Japanese baseball player (b. 1998) |
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| yasushi motoyama researcher (ORCID 0000-0003-1957-2124) |
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| hiroto motoyama researcher (ORCID 0000-0001-7113-9614) |
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| satoru motoyama researcher (ORCID 0000-0001-9191-2563) |
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| munekazu motoyama researcher |
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| andrea barretto motoyama researcher at the University of Brasilia |
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| yuri l motoyama researcher |
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| shinnosuke motoyama Japanese theatre director, JP |
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| paula vitória pereira motoyama researcher |
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| jun motoyama researcher |
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| michiyo motoyama researcher |
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| osamu motoyama researcher (ORCID 0000-0003-4903-4546) |
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| takayuki motoyama researcher |
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| yasushi motoyama researcher (ORCID 0000-0002-7700-4881) |
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| hiroaki motoyama researcher ORCID ID = 0000-0003-0882-2626 |
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