| Iaaf: | KOR |
| Fedname: | Korea Association of Athletics Federations |
| Year: | 2009 |
| Games: | World Championships in Athletics |
| Location: | Berlin |
| Competitors: | 18 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Previous: | 2007 |
| Next: | 2011 |
South Korea competed at the 2009 World Championships in Athletics from 15 to 23 August. A team of 18 athletes was announced in preparation for the competition.
| Event | Athletes | ||
|---|---|---|---|
| Men | Women | ||
| 110 metres hurdles | Lee Jung-joon Park Tae-Kyong | ||
| Marathon | Lee Myong-seung Lee Myong-ki Yook Geuntae Ji Youngjun | Sun Suk Yun Park Ho-sun Lee Sun-Young | |
| 20 km walk | Park Chil-Sung Kim Hyun-Sub Byun Youngjun | ||
| Pole vault | Kim Yoo Suk | Lim Eun-Ji | |
| Long jump | Kim Deok-Hyeon | Jung Soon-Ok | |
| Triple jump | Kim Deok-Hyeon | ||
| Javelin throw | Park Jae-Myong Jung Sang-Jin | ||
| Athlete | Event | Heats Qualification | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | ||
| Lee Jung-joon | 110 m hurdles | 13.83 (SB) | 36 | Did not advance | |||
| Park Tae-kyong | 110 m hurdles | 13.93 | 40 | Did not advance | |||
| Lee Myong-seung | Marathon | 2:21:54 (SB) | 46 | ||||
| Lee Myong-ki | Marathon | 2:35:12 | 65 | ||||
| Yook Geun-tae | Marathon | 2:40:47 | 69 | ||||
| Ji Young-Jun | Marathon | align=center colspan=2 | DNF | ||||
| Hwang Jun-Hyeon | Marathon | align=center colspan=2 | DNS | ||||
| Park Chil-sung | 20 kilometres walk | 1:24:01 | 25 | ||||
| Kim Hyun-sub | 20 kilometres walk | 1:27:08 | 34 | ||||
| Byun Young-jun | 20 kilometres walk | 1:30:35 | 43 | ||||
| Kim Deok-hyeon | Long jump | 7.99 | 15 | Did not advance | |||
| Kim Deok-hyeon | Triple jump | 16.58 | 24 | Did not advance | |||
| Kim Yoo-suk | Pole vault | 5.55 (SB) | 19 | align=center colspan= 2 | Did not advance | ||
| Park Jae-myong | Javelin throw | 78.16 | 18 | align=center colspan= 2 | Did not advance | ||
| Jung Sang-jin | Javelin throw | 72.80 | 36 | align=center colspan= 2 | Did not advance | ||
| Athlete | Event | Heats Qualification | Semifinals | Final | |||
|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | ||
| Yun Sun-suk | Marathon | 2:39:56 | 39 | ||||
| Park Ho-sun | Marathon | 2:47:16 | 53 | ||||
| Lee Sun-young | Marathon | DNF | |||||
| Jung Soon-ok | Long jump | 6.49 | 14 | align=center colspan=2 | Did not advance | ||
| Lim Eun-ji | Pole vault | 4.10 | 29 | align=center colspan=2 | Did not advance | ||