| Iaaf: | KOR |
| Year: | 2017 |
| Games: | World Championships in Athletics |
| Location: | London |
| Competitors: | 17 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | |
| Previous: | 2015 |
| Next: | 2019 |
South Korea will compete at the 2017 World Championships in Athletics in London, Great Britain, from 4–13 August 2017.[1]
(q – qualified, NM – no mark, SB – season best)
| Athlete | Event | Heat | Semifinal | Final | ||||
|---|---|---|---|---|---|---|---|---|
| Result | Rank | Result | Rank | Result | Rank | |||
| style=text-align:left | Kim Kuk-young | style=text-align:left | 100 metres | 10.24 | 24 Q | 10.40 | 23 | colspan=2 |
| style=text-align:left | Kim Hyo-su | style=text-align:left rowspan=3 | Marathon | 2:25:08 | 59 | |||
| style=text-align:left | Shin Kwang-sik | 2:29:52 | 65 | |||||
| style=text-align:left | Yu Seung-yeop | 2:29:06 | 64 | |||||
| style=text-align:left | Kim Byoung-jun | style=text-align:left | 110 metres hurdles | 13.81 | 36 | colspan=4 | ||
| style=text-align:left | Choe Byeong-kwang | style=text-align:left rowspan=3 | 20 kilometres walk | 1:22:54 SB | 31 | |||
| style=text-align:left | Kim Hyun-sub | 1:22:08 | 26 | |||||
| style=text-align:left | Kim Dae-ho | 1:30:41 | 57 | |||||
| style=text-align:left | Park Chil-sung | style=text-align:left | 50 kilometres walk | 3:59:46 SB | 29 | |||
| Athlete | Event | Qualification | Final | |||
|---|---|---|---|---|---|---|
| Distance | Position | Distance | Position | |||
| style=text-align:left | Woo Sang-hyeok | style=text-align:left | High jump | 2.22 | 25 | colspan=2 |
| style=text-align:left | Kim Deok-hyeon | style=text-align:left rowspan=4 | Long jump | 7.85 | 16 | |
| Athlete | Event | Heat | Semifinal | Final | |||
|---|---|---|---|---|---|---|---|
| Result | Rank | Result | Rank | Result | Rank | ||
| style=text-align:left | Choi Kyung-sun | style=text-align:left rowspan=3 | Marathon | 2:45:46 | 54 | ||
| style=text-align:left | Kim Seon-geun | 2:39:52 | 38 | ||||
| style=text-align:left | Lim Kyung-hee | 2:38:38 | 34 | ||||
| style=text-align:left | Jung Hye-lim | style=text-align:left | 100 metres hurdles | 13.37 | 34 | colspan=4 | |
| style=text-align:left | Jeon Yeon-geun | style=text-align:left rowspan=2 | 20 kilometres walk | 1:33:29 SB | 30 | ||
| style=text-align:left | Lee Da-seul | 1:38:54 | 48 | ||||