| Seo Jae-duck | |
| Nationality: | South Korean |
| Birth Date: | 21 July 1989 |
| Birth Place: | Gwangju, South Korea |
| Weight: | 980NaN0 |
| Spike: | 3150NaN0 |
| Block: | 3050NaN0 |
| Position: | Outside / Opposite Spiker |
| Currentclub: |  Suwon KEPCO Vixtorm |
| Currentnumber: | 1 |
| Years: | 2011– |
| Clubs: | Suwon KEPCO Vixtorm |
| Nationalyears: | 2009– |
| Nationalteam: | South Korea |
| Hangul: | 서재덕 |
| Rr: | Seo Jaedeok |
| Mr: | Sŏ Chaedŏk |
Seo Jae-duck (born July 21, 1989) is a volleyball player from South Korea, who plays as for the Men's National Team from 2009 Summer Universiade. Current, he plays as an Outside spiker for the Suwon KEPCO Vixtorm.[1]