Family name Fukai (フカイ 
, 福凯 
, Fukai 
) , globally, is a rare last name. The family name Fukai is characteristic of Hong Kong, where it is a rare surname, Japan, and Singapore. In absolute terms, it is the most numerous in China, Japan, and Brazil. More prevalently, Fukai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| フカイ | Japan |
| 福凯 | China |
| Fukai | Brazil, Japan, Taiwan, United States, China |
| Фукаи | Russia |
| shidouken fukai (b. 1680) |
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| katsumi fukai (1948-1978) (b. 1948) |
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| tatsuo fukai researcher |
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| fukai bao researcher |
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| yohsuke t fukai researcher |
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| shu fukai Australian agricultural scientist, AU |
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| ryuta fukai researcher |
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| tohru fukai researcher (ORCID 0000-0001-9864-571X) |
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| fukai ma researcher (ORCID 0000-0003-0997-2626) |
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| junya fukai researcher |
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| fukai zhang researcher (ORCID 0000-0002-7378-3478) |
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| fukai shan researcher |
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| sachiko toma fukai researcher |
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| shuya fukai researcher |
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| kazuyoshi fukai researcher |
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