| Roles | Competed in Olympic Games • Competed in Youth Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Jeong•Jae-Ung | |
| Used name | Jeong•Jae-Ung | |
| Name order | Oriental | |
| Original name | 정•재웅 | |
| Other names | Chung Jae-Woong | |
| Born | 2 June 1999 in Seoul, Seoul |  KOR |
| Measurements | 174 cm / 71 kg | |
| Affiliations | Dongbuk High School — Seoul, Seoul | KOR |
| NOC | Republic of Korea | KOR |
| Medals | YOG |
| Gold | 1 |
| Silver | 1 |
| Bronze | 1 |
| Total | 3 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2016 Winter Youth Olympics | Speed Skating (Skating) | KOR |
Jeong Jae-Ung | |||
| 500 metres, Boys (YOG) | 3 | Bronze | ||||
| Team Sprint, Mixed Youth (YOG) | Team 6 | 1 | Gold | |||
| 1,500 metres, Boys (YOG) | 8 | |||||
| Mass Start, Boys (YOG) | 2 | Silver | ||||
| 2018 Winter Olympics | Speed Skating (Skating) | KOR |
Jeong Jae-Ung | |||
| 1,000 metres, Men (Olympic) | 13 |
