Last name Hanzawa (Hanzawa 
) , worldwide, is a rare family name. The family name Hanzawa is habitual in Hong Kong, where it is a rare surname, Japan, where it is a very rare surname, and Brazil. Not in comparison with a country's population, the name is most common in Japan, Brazil, and the United States. Also, Hanzawa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Hanzawa | Japan, China, Hong Kong, United States, Brazil |
| tsutomu hanzawa Japanese ice hockey player, JP (b. 1948) |
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| eiichi hanzawa (b. 1949) |
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| akiho hanzawa researcher (ORCID 0000-0001-8742-4153) |
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| hiroyuki hanzawa researcher (ORCID 0000-0002-0471-7936) |
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| eiko hanzawa researcher |
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| naoto hanzawa Japanese carcinologist, JP |
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| shunya hanzawa researcher |
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| nobutomo hanzawa researcher |
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| mana hanzawa researcher (ORCID 0000-0002-5076-4549) |
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