In the world, Hiroharu (Hiroharu 
) is a rare masculine forename. The first name Hiroharu is habitual in Eastern Asia, particularly South Korea, where it is a rare male name, and China, where it is an extremely rare male name. Likewise, Hiroharu is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Hiroharu | Brazil, Spain, China, South Korea, United States |
| hiroharu yamashita researcher |
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| hiroharu kataoka researcher |
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| hiroharu ajiro researcher |
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| hiroharu maegawa researcher (ORCID 0000-0001-8331-546X) |
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| hiroharu kobayashi researcher (ORCID 0000-0002-7232-7331) |
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