| Nickname(s) | Taegeuk Warriors The Red Devils Tiger of Asia | ||
|---|---|---|---|
| Association | Korea Football Association | ||
| Confederation | AFC (Asia) | ||
| Sub-confederation | EAFF (East Asia) | ||
| Head coach | Lee Chang-won | ||
| FIFA code | KOR | ||
| |||
| First international | |||
 South Korea 2–0 Thailand  (Kuala Lumpur, Malaya; 19 April 1959) | |||
| Biggest win | |||
 South Korea 28–0 Guam  (Ho Chi Minh City, Vietnam; 6 November 2007) | |||
| Biggest defeat | |||
 Brazil 10–3 South Korea  (Kuching, Malaysia; 22 June 1997) | |||
| FIFA U-20 World Cup | |||
| Appearances | 15 (first in 1979) | ||
| Best result | Runners-up (2019) | ||
| AFC U-20 Asian Cup | |||
| Appearances | 38 (first in 1959) | ||
| Best result | Champions (1959, 1960, 1963, 1978, 1980, 1982, 1990, 1996, 1998, 2002, 2004, 2012) | ||
The South Korea national under-20 football team (Korean: 대한민국 20세 이하 축구 국가대표팀; recognized as Korea Republic by FIFA) represents South Korea in international youth football competitions and also can be managed as under-18 or under-19 team if necessary. South Korean under-20 team won twelve AFC U-20 Asian Cup (AFC Youth Championship) titles and reached the FIFA U-20 World Cup final once, both are the most successful results among Asian teams.