Surname Tachi (Tachi 
, タチ , Тати 
) , around the world, is quite a rare last name. The family name Tachi is habitual in Cameroon, where it is quite a rare surname, North Macedonia, and Kyrgyzstan. Not in comparison with a country's population, the name is most common in India, Cameroon, and Nigeria. More frequently, Tachi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tachi | Japan, Algeria, Nigeria, India, Cameroon |
| タチ | Japan |
| Тати, Таши | Kyrgyzstan, Kazakhstan, Russia |
| kimiko no tachi (b. 750) |
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| franciscus tachi Dutch scientific instrument maker, FR (b. 1771) |
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| tachi castillo Mexican fashion designer, MX (b. 1918) |
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| kiichiro tachi JP (b. 1949) |
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| yoshimitsu tachi researcher |
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| hiroaki tachi researcher |
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| takuji tachi Japanese entomologist, JP |
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| shuichiro tachi researcher (ORCID 0000-0002-9569-8557), JP |
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| tomoya tachi researcher |
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| yoshihiko tachi researcher |
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| masaki tachi researcher |
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| keitaro tachi researcher |
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| tomohiro tachi Japanese origamist (b. 1982) |
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