South Korea at the 2020 Summer Olympics

The following is the list of number of competitors in the Games: ==Archery==

South Korean archers qualified each for the men's and women's events by reaching the quarterfinal stage of their respective team recurves at the 2019 World Archery Championships in 's-Hertogenbosch, Netherlands. The South Korean archery team for the rescheduled Games was announced on 24 April 2021, including London 2012 gold medalist Oh Jin-hyek and Rio 2016 Olympian and former world record holder Kim Woo-jin. ;Men ;Women ;Mixed ==Athletics==

South Korean athletes further achieved the entry standards, either by qualifying time or by world ranking, in the following track and field events (up to a maximum of 3 athletes in each event): ;Track & road events ;Field events ==Badminton==

South Korea entered ten badminton players (three men and seven women) for the following events based on the BWF Race to Tokyo Rankings: two entries in the women's singles, one in the men's singles, two pairs in the women's doubles, and a pair each in the men's and mixed doubles. ;Men ;Women ;Mixed ==Baseball==

South Korea national baseball team qualified for the Olympics by advancing to the final match and securing an outright berth as the highest-ranked squad from Asia and Oceania, excluding the host nation Japan, at the 2019 WBSC Premier12 in Tokyo. ;Summary ;Team roster ;Group play ;Round 1 ;Round 2 ;Semifinals ;Bronze medal game ==Basketball==

;Summary Women's tournament South Korea women's basketball team qualified for the Olympics as one of three highest-ranked eligible squads from group B at the Belgrade meet of the 2020 FIBA Women's Olympic Qualifying Tournament, marking the country's recurrence to the sport for the first time in 12 years. ;Team roster ;Group play ---- ---- == Boxing ==

South Korea entered two female boxers for the first time into the Olympic tournament. Im Ae-ji (women's featherweight) and defending Asian Games champion Oh Yeon-ji (women's lightweight) secured the spots on the South Korean squad by advancing to the semifinal match of their respective weight divisions at the 2020 Asia & Oceania Qualification Tournament in Amman, Jordan. ==Canoeing==

Sprint South Korea qualified a single boat (men's K-1 200 m) for the Games by winning the gold medal at the 2021 Asian Canoe Sprint Qualification Regatta in Pattaya, Thailand. Qualification Legend: FA = Qualify to final (medal); FB = Qualify to final B (non-medal); SF = Qualify to semifinal; QF = Qualify to quarterfinal ==Cycling==

Road South Korea entered one rider to compete in the women's Olympic road race, by securing an outright berth, as the highest-ranked cyclist, not yet qualified, at the 2019 Asian Championships in Tashkent, Uzbekistan. Track Following the completion of the 2020 UCI Track Cycling World Championships, South Korea entered one rider to compete in the women's sprint and keirin based on her final individual UCI Olympic rankings. ;Sprint ;Keirin ==Diving==

South Korean divers qualified for five individual spots and the men's synchronized springboard team at the Games through the 2019 FINA World Championships and the 2021 FINA Diving World Cup. ==Equestrian==

South Korea entered one dressage rider into the Olympic equestrian competition, by finishing in the top two, outside the group selection, of the individual FEI Olympic Rankings for Group G (South East Asia and Oceania). Dressage Qualification Legend: Q = Qualified for the final; q = Qualified for the final as a lucky loser ==Fencing==

South Korean fencers qualified a full squad each in the men's and women's team sabre and women's team épée at the Games by finishing among the top four nations in the FIE Olympic Team Rankings, while the men's épée team claimed the spot each as the highest-ranked nation from Asia outside the world's top four. 2018 Asian Games men's foil champion Lee Kwang-hyun and two-time Olympian Jeon Hee-sook (women's foil) earned additional places on the South Korean team as one of the two highest-ranked fencers vying for qualification from Asia and Oceania in their respective individual events of the FIE Adjusted Official Rankings. ;Men ;Women ==Football==

;Summary Men's tournament South Korea men's football team qualified for the Olympics by advancing to the final match of the 2020 AFC U-23 Championship in Thailand. ;Team roster ;Group play ---- ---- ;Quarterfinal ==Golf==

South Korea entered two male and four female golfers into the Olympic tournament. ==Gymnastics==

Artistic South Korea qualified seven artistic gymnasts into the Olympic competition: a full men's team of four, which will compete in the team competition, as well as one man and two women competing as individuals. The men's squad claimed one of nine remaining spots in the team competition at the 2019 World Championships in Stuttgart, Germany (China, Russia, & Japan had already qualified at the 2018 World Championships), and Shin Jea-hwan qualified through the World Cup Series, finishing first in the standings on men's VT. On the women's side, Lee Yun-seo earned a berth through her placement in the all-around at the 2019 World Championships, while Yeo Seo-jeong, with her finish in the event finals on vault, secured an additional berth available for gymnasts who did not qualify through either the team or the all-around through the apparatus finals at the same event. The individual qualifiers, including those who qualified due to their performances on individual events, are eligible to compete in all events at the Olympics. ;Men ;Team ;Individual ;Women ==Handball==

;Summary Women's tournament The South Korean women's handball team qualified for the Olympics by winning the gold medal at the 2019 Asian Qualification Tournament in Chuzhou, China. ;Team roster ;Group play ---- ---- ---- ---- ;Quarterfinal ==Judo==

South Korea entered one karateka into the inaugural Olympic tournament. Park Hee-jun qualified directly for the men's kata category by finishing third in the final pool round at the 2021 World Olympic Qualification Tournament in Paris, France. ;Kata ==Modern pentathlon==

South Korean athletes qualified for the following spots to compete in modern pentathlon. Rio 2016 Olympian Jun Woong-tae secured his selection in the men's race by winning the bronze medal and sealing one of three spots available at the 2019 UIPM World Championships in Budapest, Hungary. Meanwhile, Asian Games silver medalists Lee Ji-hun and Kim Se-hee confirmed places each in their respective events with gold-medal victories at the 2019 Asia & Oceania Championships in Kunming, China. Jung Jin-hwa replaces Lee Ji-hun. ==Rowing==

South Korea qualified one boat in the women's single sculls for the Games by finishing sixth in the A-final and securing the third of five berths available at the 2021 FISA Asia & Oceania Olympic Qualification Regatta in Tokyo, Japan. Qualification Legend: FA=Final A (medal); FB=Final B (non-medal); FC=Final C (non-medal); FD=Final D (non-medal); FE=Final E (non-medal); FF=Final F (non-medal); SA/B=Semifinals A/B; SC/D=Semifinals C/D; SE/F=Semifinals E/F; QF=Quarterfinals; R=Repechage ==Rugby sevens==

;Summary Men's tournament South Korea national rugby sevens team qualified for the Games by winning the gold medal and securing a lone outright berth at the 2019 Asian Olympic Qualifying Tournament in Incheon, marking the country's debut in the sport. ;Team roster ;Group play ---- ---- ;9–12th place playoff ;11th place match ==Sailing==