Family name Usuki (Usuki 
) , globally, is a rare last name. The last name Usuki is habitual in Japan, where it is a very rare surname, Philippines, where it is an extremely rare surname, and the United States. Not in comparison with a country's population, this name is the most popular in Japan, the United States, and China. Likewise, Usuki is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Usuki | Japan, China, Philippines, United States, India |
| yoshinosuke usuki researcher |
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| tatsuya usuki researcher ORCID ID = 0000-0002-4803-0706 |
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| kensuke usuki researcher ORCID ID = 0000-0002-1216-4470 |
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| toyonobu usuki researcher |
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| tatsuya usuki researcher (ORCID 0000-0001-9484-3436) |
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| masato usuki researcher (ORCID 0000-0002-1166-7287) |
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| arimitsu usuki researcher, Toyota Central Research Development Laboratory Inc, JP |
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