In the entire world, Seong-Jun (성준 
, Seong-Jun 
) is quite a rare male first name. The first name Seong-Jun is habitual in Eastern Asia, particularly South Korea, where it is quite a rare masculine name. Parts of the name also exists independently as a last name Seong, and a first name Jun.
| VARIANT | COUNTRY |
|---|---|
| 성준 | South Korea |
| Seong-Jun | South Korea, United States |
Seong-Joon, Sung-Joon, Sung-Jun, and ソンジュン
| seong-jun kim researcher ORCID ID = 0000-0001-8504-2872 |
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| seong-jun park researcher |
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| seong-jun jeong researcher |
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| seong-jun kang researcher (ORCID 0000-0001-8126-4072) |
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| seong-jun cho researcher |
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| myung seong-jun association football player (b. 1998) |
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