Around the world, Hirohiko (Hirohiko 
, Хирохико 
) is a very rare boy's first name. The first name Hirohiko is habitual in Eastern Asia, particularly Japan, where it is a very rare male name, and China, where it is an extremely rare male name. Also, Hirohiko is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Hirohiko | Japan, China, Singapore, United States, Brazil |
| Хирохико | Russia |
| hirohiko shimpo (b. 1946) |
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| hirohiko inanami researcher (ORCID 0000-0002-8584-5672) |
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| hirohiko kimura researcher (ORCID 0000-0002-4912-0498) |
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| hirohiko iwasaki researcher |
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| hirohiko kohjitani researcher |
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| hirohiko hohjoh researcher (ORCID 0000-0002-1250-5124) |
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| hirohiko kono researcher (ORCID 0000-0002-3283-1867) |
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| hirohiko ando researcher |
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| hirohiko masunaga researcher, ORCID id # 0000-0002-6336-5002 |
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| hirohiko hirochika researcher |
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| hirohiko takeuchi researcher (ORCID 0000-0002-3153-4342) |
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| hirohiko tani researcher (ORCID 0000-0002-0614-8490) |
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| hirohiko motoki researcher |
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| hirohiko okamura researcher |
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| hirohiko sueki researcher |
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