 
| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Kim•Dong-Seong | 
| Used name | Kim•Dong-Seong | 
| Name order | Oriental | 
| Original name | 김•동성 | 
| Other names | Kim Dong-Sung | 
| Born | 9 February 1980 in Seoul, Seoul (KOR) | 
| Measurements | 172 cm / 67 kg | 
| Affiliations | Kyonggi High School (KOR) / Dongducheon City Speed Skating Team (KOR) | 
| NOC |  Republic of Korea | 
| Medals | OG | 
| Gold | 1 | 
| Silver | 1 | 
| Bronze | 0 | 
| Total | 2 | 
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1998 Winter Olympics | Short Track Speed Skating (Skating) |  KOR | Kim Dong-Seong | |||
| 500 metres, Men (Olympic) | 8 | |||||
| 1,000 metres, Men (Olympic) | 1 | Gold | ||||
| 5,000 metres Relay, Men (Olympic) | Republic of Korea | 2 | Silver | |||
| 2002 Winter Olympics | Short Track Speed Skating (Skating) |  KOR | Kim Dong-Seong | |||
| 500 metres, Men (Olympic) | 6 | |||||
| 1,000 metres, Men (Olympic) | 5 | |||||
| 1,500 metres, Men (Olympic) | 12 | |||||
| 5,000 metres Relay, Men (Olympic) | Republic of Korea | 
| Games | Date | Sport | Event | Phase | Mark | Pos | 
|---|---|---|---|---|---|---|
| 2002 Winter Olympics | 20 February 2002 | Short Track Speed Skating (Skating) | 1,500 metres, Men | Round One, Heat Four | 2:22.133 | 1 | 
| 2002 Winter Olympics | 20 February 2002 | Short Track Speed Skating (Skating) | 1,500 metres, Men | Semi-Finals, Heat One | 2:15.942 | 1 | 
| 2002 Winter Olympics | 23 February 2002 | Short Track Speed Skating (Skating) | 500 metres, Men | Quarter-Finals, Heat Three | 41.806 | 1 |