All over the world, Seong-Hwan (성환 
, Seong-Hwan 
) is quite a rare masculine first name. The forename Seong-Hwan is habitual in Eastern Asia, particularly South Korea, where it is quite a rare male name. Parts of the name also exists independently as a last name Seong, and a last name Hwan.
| seong-hwan jun researcher |
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| seong-hwan chang researcher |
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| seong-hwan rho researcher |
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| seong-hwan kim researcher (ORCID 0000-0002-5408-6917) |
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| seong-hwan moon researcher (ORCID 0000-0002-5165-1159) |
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| yang seong-hwan Korean football player, KR (b. 1994) |
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