Across the world, 재성 (재성 
, Jaeseong 
, Jae-Sung ) is quite a rare primarily masculine, but scarcely female first name. The given name 재성 is habitual in Eastern Asia, particularly South Korea, where it is quite a rare primarily male, but scarcely girly name. Much less frequently, 재성 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 재성 | South Korea |
| Jaeseong | Canada, Czechia, United States, South Korea, China |
| Jae-Sung | United States |
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정재성 South Korean badminton player, KR (b. 1982) |
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김재성 South Korean footballer, KR (b. 1983) |
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| 양재성 South Korean actor, KR (b. 1945) |
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| 유재성 KR (b. 1941) |
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| 황재성 KR (b. 1944) |
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| 김재성 South Korean theologian, KR (b. 1955) |
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| 홍재성 KR (b. 1946) |
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| 이재성 KR (b. 1952) |
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| 최재성 South Korean actor, KR (b. 1964) |
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| 정재성 South Korean film actor, KR (b. 1970) |
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| 장재성 KR (b. 1963) |
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| 장재성 South Korean Olympic wrestler, KR (b. 1975) |
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| 박재성 KR (b. 1970) |
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| 김재성 North Korean politician, KP |
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| 이재성 KR (b. 1970) |
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