| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Jeong•Ji-Hyeon | 
| Used name | Jeong•Ji-Hyeon | 
| Name order | Oriental | 
| Original name | 정•지현 | 
| Other names | Jung Ji-Hyun | 
| Born | 26 March 1983 in Seoul, Seoul (KOR) | 
| Measurements | 165 cm / 60 kg | 
| Affiliations | Korea National Sport University, Seoul (KOR) | 
| NOC |   Republic of Korea | 
| Medals | OG | 
| Gold | 1 | 
| Silver | 0 | 
| Bronze | 0 | 
| Total | 1 | 
Jung Ji-Hyun had the following finishes at major championships – 2007 World Championship: 60.0 kg. Greco-Roman (3rd); 2002 Asian Games: 55.0 kg. Greco-Roman (6th).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2004 Summer Olympics | Wrestling |  KOR | 
Jeong Ji-Hyeon | |||
| Lightweight, Greco-Roman, Men (Olympic) | 1 | Gold | ||||
| 2008 Summer Olympics | Wrestling |  KOR | 
Jeong Ji-Hyeon | |||
| Lightweight, Greco-Roman, Men (Olympic) | 8 | |||||
| 2012 Summer Olympics | Wrestling |  KOR | 
Jeong Ji-Hyeon | |||
| Lightweight, Greco-Roman, Men (Olympic) | 8 |