| Iaaf: | KOR |
| Fedname: | Korea Association of Athletics Federations |
| Year: | 2007 |
| Games: | World Championships in Athletics |
| Location: | Osaka |
| Competitors: | 11 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Previous: | 2005 |
| Next: | 2009 |
South Korea competed at the 2007 World Championships in Athletics from August 25 to September 2. A team of 11 athletes was announced in preparation for the competition.
| Athlete | Event | Heats Qualification | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | ||
| Park Ju-Young | Marathon | 2:21:49 | 15 | ||||
| Kim Young-chun | Marathon | 2:24:25 | 24 | ||||
| Lee Myong-seung | Marathon | 2:25:54 | 26 | ||||
| Park Chil-sung | 20 kilometres walk | 1:26:08 | 15 | ||||
| Kim Hyun-sub | 20 kilometres walk | 1:26:51 | 20 | ||||
| Kim Deok-hyeon | Triple jump | 16.78 | 8 Q | 16.71 | 9 | ||
Decathlon
| Kim Kun-woo | |||||
|---|---|---|---|---|---|
| Event | Results | Points | Rank | ||
| 100 m | 11.29 | 797 | 25 | ||
| Long jump | 7.12 | 842 | 21 | ||
| Shot put | 12.83 (SB) | 657 | 26 | ||
| High jump | 1.91 (SB) | 723 | 22 | ||
| 400 m | 48.99 (SB) | 862 | 13 | ||
| 110 m hurdles | 14.89 (PB) | 863 | 19 | ||
| Discus throw | 36.23 (SB) | 588 | 25 | ||
| Pole vault | 4.80 (PB) | 849 | 13 | ||
| Javelin throw | 44.79 | 512 | 23 | ||
| 1500 m | 4:16.16 (SB) | 838 | 1 | ||
| Total | 7531 (SB) | 21 | |||
| Athlete | Event | Heats Qualification | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | ||
| Lim Kyung-hee | Marathon | 2:49:30 (SB) | 49 | ||||
| Chae Eun-hee | Marathon | 2:50:26 | 50 | ||||
| Kim Mi-jung | 20 kilometres walk | 1:41:33 | 26 | ||||
| Jung Soon-ok | Long jump | 6.45 | 22 | align=center colspan=2 | did not advance | ||