Seungjun: Birthday & Age
| Name | Seungjun |
|---|---|
| Korean name | 제이어스 |
| Group / artist | ONF |
| Birthday | Jan 13, 1995 |
| Age | 31 years old (as of Oct 28, 2026) |
| Next birthday | D-77 · Jan 13, 2027 (Wed) · turns 32 |
| Source | Wikidata Q120792908 |
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Members with the same birthday
Han Eun-ji (EVERGLOW) 
Seonghyeon (CORTIS) Idols born on January 13 › · All January birthdays ›
ONF: upcoming schedules
No upcoming schedules listed.
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Birthdays come from Wikidata and are listed only when the full date is recorded. Current members only; members without a confirmed birthday and virtual idols are not included. Ages are international (full) ages, and dates follow Korea time.