Family name Nagayasu (Nagayasu 
) , all around the world, is a very rare cognomen. The cognomen Nagayasu is characteristic of Japan, where it is a very rare surname, Brazil, where it is an extremely rare surname, and the United States. Not in comparison with a country's population, it is commonest in Japan, China, and Brazil. Much more prevalently, Nagayasu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nagayasu | Brazil, Taiwan, Japan, China, United States |
| shūtoku nagayasu (b. 1788) |
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| shuichi nagayasu 1909 - 1990 Also known as: S. N. ; 長安, 周一 / ナガヤス, シュウイチ ; (b. 1909) |
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| takeshi nagayasu researcher (ORCID 0000-0002-0677-9364) |
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| atsushi nagayasu researcher |
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| kazuki nagayasu researcher ORCID ID = 0000-0002-7438-732X |
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| jun nagayasu economist (Tohoku University) |
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| haruo nagayasu |
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