Surname Hirasawa (ヒラサワ 
, Hirasawa 
, Хирасава) , in all the world, is a rare cognomen. The family name Hirasawa is characteristic of Sweden, where it is a rare surname, Singapore, and Japan. In absolute terms, it is the most numerous in Japan, the United States, and Brazil. More prevalently, Hirasawa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| ヒラサワ | Japan |
| Hirasawa | Brazil, Japan, China, Indonesia, United States |
| hirasawa kurō Japanese samurai and potter (b. 1772) |
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| yasuo hirasawa Japanese astronomer, JP (b. 1927) |
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| keiko hirasawa (b. 1919) |
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| yasusuke hirasawa (b. 1937) |
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| rui hirasawa researcher (ORCID 0000-0002-0799-3581) |
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| shigeo hirasawa researcher (ORCID 0000-0003-3077-8887) |
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| takeshi hirasawa researcher (ORCID 0000-0002-4009-1758) |
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| tatsuya hirasawa researcher |
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| hajime hirasawa researcher |
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| toshiaki hirasawa researcher |
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| tadashi hirasawa researcher |
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| noriyasu hirasawa researcher |
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| shun hirasawa researcher (ORCID 0000-0002-1659-3424) |
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| michiru hirasawa researcher (ORCID 0000-0002-2491-8102) |
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| yosuke hirasawa researcher |
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