Around the globe, 健一 (Jianyi 
, 健一 , Ken-Ichi 
) is quite a rare largely boy's, but uncommonly feminine first name. The forename 健一 is characteristic of Taiwan, where it is a rare boy's name, Afghanistan, and Singapore, where it is a rare gender-neutral name. In absolute terms, it most frequently occurs in China, Taiwan, and Afghanistan. Very seldom, 健一 is the last name as well as the forename.
健一 is also a name for the fictitious and mythical characters: .
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榎本 健一 Japanese comedian (1904-1970), JP (b. 1904) |
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奥野健一 JP (b. 1898) |
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竹村健一 Japanese journalist and critic, JP (b. 1930) |
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富永健一 Japanese sociologist (1931-2019), JP (b. 1931) |
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香山健一 Japanese political scientist, JP (b. 1933) |
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森健一 Japanese computer scientist, JP (b. 1938) |
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伊賀健一 Japanese engineer, JP (b. 1940) |
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| 永見健一 JP (b. 1892) |
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| 澤井健一 Japanese judoka (1903-1988), JP (b. 1903) |
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藤岡健一 Japanese horse trainer and groom, JP (b. 1961) |
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細田健一 Japanese politician, JP (b. 1964) |
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| 坪川 健一 Japanese screenwriter, JP (b. 1916) |
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| 横田健一 Japanese historian, JP (b. 1916) |
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| 茅野健一 baseball player (1917-), JP (b. 1917) |
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| 太田健一 Japanese baseball player, JP (b. 1918) |
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