Cognomen Miyai (ミヤイ 
, Miyai 
) , worldwide, is a rare surname. The family name Miyai is habitual in Kenya, where it is a rare surname, Austria, and Japan, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Brazil, Kenya, and Japan. More frequently, Miyai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ミヤイ | Japan |
| Miyai | Brazil, India, Japan, United States, Kenya |
| jinnosuke miyai (b. 1921) |
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| yuji miyai Japanese sailor, JP (b. 1978) |
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| kosuke miyai researcher (ORCID 0000-0003-1776-3541) |
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| caio akira miyai researcher |
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| tomohiro miyai researcher, ORCID id # 0000-0003-1952-0228 |
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| yuki miyai researcher |
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