Surname Haraguchi (ハラグチ 
, Haraguchi 
, Харагучи 
) , in all the world, is quite a rare last name. The surname Haraguchi is characteristic of Japan, where it is a rare surname, Brazil, and Singapore. Not in comparison with a country's population, it is the most numerous in Japan, the United States, and Brazil. More frequently, Haraguchi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ハラグチ | Japan |
| Haraguchi | Brazil, Japan, China, Indonesia, United States |
| Харагучи | Russia |
| ryōhei haraguchi Japanese accounting academic (b. 1878) |
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| takejirō haraguchi (1882-1951) (b. 1882) |
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| masatoshi haraguchi (b. 1925) |
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| takehiko haraguchi (b. 1934) |
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| makoto haraguchi researcher |
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| shuichi haraguchi researcher |
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| ryosuke haraguchi researcher |
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| shogo haraguchi researcher |
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| kazuo haraguchi botanist |
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| naotsugu haraguchi researcher |
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| satoru haraguchi researcher |
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| naoki haraguchi researcher |
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| tomoyuki haraguchi researcher (ORCID 0000-0002-5772-9754) |
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| ryuma haraguchi researcher (ORCID 0000-0003-0267-5338) |
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| yuya haraguchi researcher |
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