Across the world, 재원 (Jaewon 
, 재원 , Jae-Won 
) is quite a common gender-neutral first name. The first name 재원 is habitual in South Korea, where it is quite a common gender-neutral name, the United States, where it is a very rare epicene name, and China, where it is an extremely rare boy's name. Much less frequently, 재원 is the last name as well as the forename.
| 정재원 South Korean politician, KR (b. 1906) |
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| 김재원 KR (b. 1909) |
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| 정재원 KR (b. 1917) |
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이재원 South Korean singer, KR (b. 1980) |
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황재원 South Korean footballer, KR (b. 1981) |
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김재원 South Korean actor and model, KR (b. 1981) |
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오재원 South Korean professional baseball player, KR (b. 1985) |
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| 정재원 South Korean politician, KR (b. 1942) |
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| 노재원 KR (b. 1932) |
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신재원 South Korean footballer (1998-), KR (b. 1998) |
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| 심재원 South Korean baseball player (1953-1994), KR (b. 1953) |
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| 이재원 South Korean lawyer, KR (b. 1958) |
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| 공재원 South Korean actor, KR (b. 1965) |
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| 심재원 South Korean film actor, KR (b. 1968) |
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| 최재원 South Korean actor, KR (b. 1969) |
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