Surname Oouchi (オオウチ 
, Oouchi 
) , in the entire world, is a rare family name. The family name Oouchi is habitual in Taiwan, where it is quite a rare surname, New Zealand, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, the name is most common in Taiwan, China, and India. Predominantly, Oouchi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| オオウチ | Japan |
| Oouchi | China, Taiwan, United States, India, New Zealand |
| kazuyoshi oouchi researcher, ORCID id # 0000-0001-7891-5508 |
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| muneki oouchi researcher |
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