| Iaaf: | KOR |
| Fedname: | Korea Association of Athletics Federations |
| Year: | 2011 |
| Games: | World Championships in Athletics |
| Location: | Daegu |
| Competitors: | 53 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 1 |
| Rank: | 35 |
| Previous: | 2009 |
| Next: | 2013 |
South Korea competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea as the host nation.
A team of 63 athletes wasannounced to represent the countryin the event. The team was led by 110-meter hurdler Park Tae-kyong.Furthermore, the team includes 3 athletes invited by the IPC for exhibitionevents: Jung Dong-ho and Yoo Byung-hoon, 400m T53 (wheelchair) men, and Kang Kyung-sun, 800m T54 (wheelchair) women.
The following athletes appeared on the preliminary Entry List, but not on the Official Start List of the specific event, resulting in a total number of 53 competitors:
| Event | Athlete | |
|---|---|---|
| Men | 4 x 100 metres relay | Jeon Duk-hyung |
| Kim Jin-Kuk | ||
| 4 x 400 metres relay | Choi Myung-jun | |
| Kim Jaedeok | ||
| Women | 4 x 100 metres relay | Jung Hye-lim |
| Joung Hansol | ||
| 4 x 400 metres relay | Jang Yea-eun | |
| Seo In-ae |
| Athlete | Event | Preliminaries | Heats | Semifinals | Final | ||||
|---|---|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | ||
| Kim Kuk-young | 100 metres | DQ | Did not advance | ||||||
| Park Bong-go | 400 metres | 46.42 (SB) | align=center style="border-right:double" | 25 | align=center colspan=4 | Did not advance | |||
| Sin Sang-min | 1500 metres | 3:55.02 | align=center style="border-right:double" | 35 | align=center colspan=4 | Did not advance | |||
| Baek Seung-ho | 5000 metres | 15:01.37 | align=center style="border-right:double" | 34 | align=center colspan=2 | Did not advance | |||
| Jeong Jin-hyeok | Marathon | 2:17:04 | 23 | ||||||
| Lee Myong-seung | Marathon | 2:18:05 | 28 | ||||||
| Hwang Jun-Hyeon | Marathon | 2:21:54 (SB) | 35 | ||||||
| Hwang Jun-Suk | Marathon | 2:23:47 | 40 | ||||||
| Kim Min | Marathon | 2:27:20 (SB) | 44 | ||||||
| Park Tae-kyong | 110 m hurdles | 13.83 | align=center style="border-right:double" | 26 | Did not advance | ||||
| Lee Seung-yun | 400 m hurdles | 52.98 | align=center style="border-right:double" | 34 | Did not advance | ||||
| Yeo Ho-suah Cho Kyu-won Kim Kuk-young Lim Hee-nam | 4 x 100 metres relay | 38.94 (NR) | align=center style="border-right:double" | 13 | Did not advance | ||||
| Park Bong-go Lim Chan-ho Lee Jun Seong Hyeok-je | 4 x 400 metres relay | 3:04.05 (NR) | align=center style="border-right:double" | 15 | Did not advance | ||||
| Byun Young-jun | 20 kilometres walk | 1:24:48 | 25 | ||||||
| Kim Hyun-sub | 20 kilometres walk | 1:21:17 | |||||||
| Park Chil-sung | 20 kilometres walk | align=center colspan=2 | DNF | ||||||
| Park Chil-sung | 50 kilometres walk | 3:47:13 (NR) | 7 | ||||||
| Kim Dong-young | 50 kilometres walk | 3:51:12 (PB) | 14 | ||||||
| Yim Jung-hyun | 50 kilometres walk | align=center colspan=2 | DQ | ||||||
| Kim Deok-hyeon | Long jump | 8.02 (SB) | align=center style="border-right:double" | 11 | align=center colspan=2 | DNS | |||
| Kim Deok-hyeon | Triple jump | align=center colspan=2 style="border-right:double" | No Mark | align=center colspan=2 | Did not advance | ||||
| Yun Ye-hwan | High jump | align=center colspan=2 style="border-right:double" | No Mark | align=center colspan=2 | Did not advance | ||||
| Kim Yoo-suk | Pole vault | 5.20 | align=center style="border-right:double" | 26 | align=center colspan= 2 | Did not advance | |||
| Hwang In-sung | Shot put | 17.75 | align=center style="border-right:double" | 27 | Did not advance | ||||
| Lee Yun-chul | Hammer throw | 68.98 (SB) | align=center style="border-right:double" | 29 | align=center colspan= 2 | Did not advance | |||
| Jung Sang-jin | Javelin throw | 72.03 | align=center style="border-right:double" | 34 | align=center colspan= 2 | Did not advance | |||
Decathlon
| Kim Kun-woo | |||||
|---|---|---|---|---|---|
| Event | Results | Points | Rank | ||
| 100 m | 11.11 (SB) | 836 | 19 | ||
| Long jump | 7.24 (SB) | 871 | 16 | ||
| Shot put | 12.96 (SB) | 665 | 26 | ||
| High jump | 1.96 (SB) | 767 | 20 | ||
| 400 m | 49.24 | 850 | 10 | ||
| 110 m hurdles | 14.95 (SB) | 856 | 24 | ||
| Discus throw | 39.53 | 655 | 23 | ||
| Pole vault | 4.90 (PB) | 880 | 6 | ||
| Javelin throw | 53.33 | 638 | 20 | ||
| 1500 m | 4:15.63 (SB) | 842 | 2 | ||
| Total | 7860 (NR) | 17 | |||
| Athlete | Event | Preliminaries | Heats | Semifinals | Final | ||||
|---|---|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | ||
| Jung Hye-lim | 100 metres | 11.90 | align=center style="border-right:double" | 3 Q | 11.88 | align=center style="border-right:double" | 40 | align=center colspan=4 | Did not advance |
| Huh Yeon-jung | 800 metres | 2:08.05 | align=center style="border-right:double" | 34 | align=center colspan=4 | Did not advance | |||
| Kim Sung-eun | Marathon | 2:37:05 (SB) | 28 | ||||||
| Lee Sook-jung | Marathon | 2:40:23 | 34 | ||||||
| Chung Yun-hee | Marathon | 2:42:28 | 35 | ||||||
| Park Jun-sook | Marathon | 3:03:34 | 43 | ||||||
| Choi Bo-ra | Marathon | 3:10:06 | 44 | ||||||
| Jung Hye-lim | 100 m hurdles | 13.39 | align=center style="border-right:double" | 23 | align=center colspan=4 | Did not advance | |||
| Son Kyeong-mi | 400 m hurdles | 1:00.21 | 36 | align=center colspan=4 | Did not advance | ||||
| Eum Jeesu Kim So-yeon Lee Sun-ae Park So-yeun | 4 x 100 metres relay | 46.14 (SB) | align=center style="border-right:double" | 16 | align=center colspan=2 | Did not advance | |||
| Woo Yu-jin Lee Ha-nee Oh Se-ra Park Seongmyun | 4 x 400 metres relay | 3:43.22 (SB) | align=center style="border-right:double" | 19 | align=center colspan=2 | Did not advance | |||
| Jeon Yong-eun | 20 kilometres walk | 1:35:52 (SB) | 26 | ||||||
| Jung Soon-ok | Long jump | 6.18 (SB) | align=center style="border-right:double" | 29 | align=center colspan= 2 | Did not advance | |||
| Jung Hye-kyung | Triple jump | 13.50 | align=center style="border-right:double" | 30 | Did not advance | ||||
| Han Da-rye | High jump | 1.75 | align=center style="border-right:double" | 29 | Did not advance | ||||
| Choi Yun-hee | Pole vault | 4.40 (NR) | align=center style="border-right:double" | 19 | align=center colspan=2 | Did not advance | |||
| Lee Mi-young | Shot put | 16.18 | align=center style="border-right:double" | 23 | align=center colspan=2 | Did not advance | |||
| Kang Na-ru | Hammer throw | 61.05 | align=center style="border-right:double" | 30 | align=center colspan=2 | Did not advance | |||
| Kim Kyung-ae | Javelin throw | 54.96 | align=center style="border-right:double" | 27 | Did not advance | ||||