# South Korea at the 2020 Summer Olympics

South Korea competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic.

## Medalists

| Medal | Name | Sport | Event | Date |
| Gold | Kim Je-deok An San | Archery | Mixed team | 24 July |
| Gold | An San Jang Min-hee Kang Chae-young | Archery | Women's team | 25 July |
| Gold | Kim Je-deok Kim Woo-jin Oh Jin-hyek | Archery | Men's team | 26 July |
| Gold | Oh Sang-uk Kim Jun-ho Kim Jung-hwan Gu Bon-gil | Fencing | Men's team sabre | 28 July |
| Gold | An San | Archery | Women's individual | 30 July |
| Gold | Shin Jea-hwan | Gymnastics | Men's vault | 2 August |
| Silver | Choi In-jeong Kang Young-mi Lee Hye-in Song Se-ra | Fencing | Women's team épée | 27 July |
| Silver | Lee Da-bin | Taekwondo | Women's +67 kg | 27 July |
| Silver | Cho Gu-ham | Judo | Men's 100 kg | 29 July |
| Silver | Kim Min-jung | Shooting | Women's 25 metre pistol | 30 July |
| Bronze | Kim Jung-hwan | Fencing | Men's sabre | 24 July |
| Bronze | Jang Jun | Taekwondo | Men's 58 kg | 24 July |
| Bronze | An Baul | Judo | Men's 66 kg | 25 July |
| Bronze | An Chang-rim | Judo | Men's 73 kg | 26 July |
| Bronze | In Kyo-don | Taekwondo | Men's +80 kg | 27 July |
| Bronze | Kweon Young-jun Ma Se-geon Park Sang-young Song Jae-ho | Fencing | Men's team épée | 30 July |
| Bronze | Choi Soo-yeon Kim Ji-yeon Yoon Ji-su Seo Ji-yeon | Fencing | Women's team sabre | 31 July |
| Bronze | Yeo Seo-jeong | Gymnastics | Women's vault | 1 August |
| Bronze | Kim So-yeong Kong Hee-yong | Badminton | Women's doubles | 2 August |
| Bronze | Jun Woong-tae | Modern pentathlon | Men's individual | 7 August |
Medals by sport :
| Sport | | | | Total |
| Archery | 4 | 0 | 0 | 4 |
| Badminton | 0 | 0 | 1 | 1 |
| Fencing | 1 | 1 | 3 | 5 |
| Gymnastics | 1 | 0 | 1 | 2 |
| Judo | 0 | 1 | 2 | 3 |
| Modern pentathlon | 0 | 0 | 1 | 1 |
| Shooting | 0 | 1 | 0 | 1 |
| Taekwondo | 0 | 1 | 2 | 3 |
| Total | 6 | 4 | 10 | 20 |

## Competitors

The following is the list of number of competitors in the Games:
| Sport | Men | Women | Total |
| Archery | 3 | 3 | 6 |
| Athletics | 5 | 2 | 7 |
| Badminton | 3 | 7 | 10 |
| Baseball | 24 | — | 24 |
| Basketball | 0 | 12 | 12 |
| Boxing | 0 | 2 | 2 |
| Canoeing | 1 | 0 | 1 |
| Cycling | 0 | 2 | 2 |
| Diving | 3 | 2 | 5 |
| Equestrian | 1 | 0 | 1 |
| Fencing | 9 | 9 | 18 |
| Football | 22 | 0 | 22 |
| Golf | 2 | 4 | 6 |
| Gymnastics | 5 | 2 | 7 |
| Handball | 0 | 14 | 14 |
| Karate | 1 | 0 | 1 |
| Judo | 7 | 7 | 14 |
| Modern pentathlon | 2 | 2 | 4 |
| Rowing | 0 | 1 | 1 |
| Rugby sevens | 13 | 0 | 13 |
| Sailing | 4 | 0 | 4 |
| Shooting | 7 | 8 | 15 |
| Sport climbing | 1 | 1 | 2 |
| Swimming | 7 | 5 | 12 |
| Table tennis | 3 | 3 | 6 |
| Taekwondo | 3 | 3 | 6 |
| Tennis | 1 | 0 | 1 |
| Volleyball | 0 | 12 | 12 |
| Weightlifting | 3 | 4 | 7 |
| Wrestling | 2 | 0 | 2 |
| Total | 132 | 105 | 237 |

## 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

| Athlete | Event | Ranking round | Ranking round | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Score | Seed | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Kim Je-deok | Individual | 688 | 1 | David (MAW) W 6–0 | Unruh (GER) L 3–7 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Oh Jin-hyek | Individual | 681 | 3 | Hammed (TUN) W 6–0 | Das (IND) L 5–6 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kim Woo-jin | Individual | 680 | 4 | Balogh (HUN) W 6–0 | Plihon (FRA) W 6–2 | Mohamad (MAS) W 6–0 | Tang C-c (TPE) L 4–6 | Did not advance | Did not advance | Did not advance |
| Kim Je-deok Kim Woo-jin Oh Jin-hyek | Team | 2049 | 1 | — | — | Bye | India (IND) W 6–0 | Japan (JPN) W 5–4 | Chinese Taipei (TPE) W 6–0 | |

### Women

| Athlete | Event | Ranking round | Ranking round | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Score | Seed | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| An San | Individual | 680 | 1 | Hourtou (CHA) W 6–2 | dos Santos (BRA) W 7–1 | Hayakawa (JPN) W 6–4 | Kumari (IND) W 6–0 | Brown (USA) W 6–5 | Osipova (ROC) W 6–5 | |
| Jang Min-hee | Individual | 677 | 2 | Adam (EGY) W 6–0 | Nakamura (JPN) L 2–6 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kang Chae-young | Individual | 675 | 3 | Espinosa (ECU) W 6–0 | Marchenko (UKR) W 7–1 | Anagöz (TUR) W 6–2 | Osipova (ROC) L 1–7 | Did not advance | Did not advance | Did not advance |
| An San Jang Min-hee Kang Chae-young | Team | 2032 | 1 | — | — | Bye | Italy (ITA) W 6–0 | Belarus (BLR) W 5–1 | ROC W 6–0 | |

### Mixed

| Athlete | Event | Ranking round | Ranking round | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Score | Seed | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Kim Je-deok An San | Team | 1368 | 1 Q | Bangladesh (BAN) W 6–0 | India (IND) W 6–2 | Mexico (MEX) W 5–1 | Netherlands (NED) W 5–3 | |

## 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):

### Key

* Note–Ranks given for track events are within the athlete's heat only
* Q = Qualified for the next round
* q = Qualified for the next round as a fastest loser or, in field events, by position without achieving the qualifying target
* NR = National record
* N/A = Round not applicable for the event
* Bye = Athlete not required to compete in round

### Track & road events

| Athlete | Event | Final | Final |
| Athlete | Event | Result | Rank |
| Choe Byeong-kwang | Men's 20 km walk | 1:28:12 | 37 |
| Oh Joo-han | Men's marathon | DNF | DNF |
| Shim Jung-sub | Men's marathon | 2:20:36 | 49 |
| Ahn Seul-ki | Women's marathon | 2:41:11 | 57 |
| Choi Kyung-sun | Women's marathon | 2:35:33 | 34 |

### Field events

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Distance | Position | Distance | Position |
| Woo Sang-hyeok | Men's high jump | 2.28 | =9 q | 2.35 NR | 4 |
| Jin Min-sub | Men's pole vault | 5.50 | 19 | Did not advance | Did not advance |

## 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

| Athlete | Event | Group stage | Group stage | Group stage | Group stage | Elimination | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Rank | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Heo Kwang-hee | Singles | Lam (USA) W (21–10, 21–15) | Momota (JPN) W (21–15, 21–19) | — | 1 Q | Bye | Cordón (GUA) L (13–21, 18–21) | Did not advance | Did not advance | Did not advance |
| Choi Sol-gyu Seo Seung-jae | Doubles | Chia / Soh (MAS) L (22–24, 15–21) | Ho-Shue / Yakura (CAN) W (21–14, 21–8) | Ahsan / Setiawan (INA) L (22–24, 21–13, 18–21) | 3 | — | Did not advance | Did not advance | Did not advance | Did not advance |

### Women

| Athlete | Event | Group stage | Group stage | Group stage | Group stage | Elimination | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Rank | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| An Se-young | Singles | Azurmendi (ESP) W (21–13, 21–8) | Adesokan (NGR) W (21–3, 21–6) | — | 1 Q | Ongbamrungphan (THA) W (21–15, 21–15) | Chen Yf (CHN) L (18–21, 19–21) | Did not advance | Did not advance | Did not advance |
| Kim Ga-eun | Singles | Gaitan (MEX) W (21–14, 21–9) | Yeo J M (SGP) W (21–13, 21–14) | — | 1 Q | Yamaguchi (JPN) L (17–21, 18–21) | Did not advance | Did not advance | Did not advance | Did not advance |
| Kim So-yeong Kong Hee-yong | Doubles | G Stoeva / S Stoeva (BUL) W (21–23, 21–12, 23–21) | Kititharakul / Prajongjai (THA) W (21–19, 24–22) | Chen Qc / Jia Yf (CHN) L (21–19, 16–21, 14–21) | 2 Q | — | Matsumoto / Nagahara (JPN) W (21–14, 14–21, 28–26) | Chen Qc / Jia Yf (CHN) L (15–21, 11–21) | Lee S-h/ Shin S-c (KOR) W (21–10, 21–17) | |
| Lee So-hee Shin Seung-chan | Doubles | Mapasa / Somerville (AUS) W (21–9, 21–6) | Fruergaard / Thygesen (DEN) L (21–15, 19–21, 20–22) | Du Y / Li Yh (CHN) W (21–19, 21–12) | 1 Q | — | Piek / Seinen (NED) W (21–8, 21–17) | Polii / Rahayu (INA) L (19–21, 17–21) | Kim S-y/ Kong H-y (KOR) L (10–21, 17–21) | 4 |

### Mixed

| Athlete | Event | Group stage | Group stage | Group stage | Group stage | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Rank | Opposition Score | Opposition Score | Opposition Score | Rank |
| Seo Seung-jae Chae Yoo-jung | Doubles | Tabeling / Piek (NED) W (16–21, 21–15, 21–11) | Elgamal / Hany (EGY) W (21–7, 21–3) | Zheng Sw / Huang Yq (CHN) L (14–21, 17–21) | 2 Q | Wang Yy / Huang Dp (CHN) L (9–21, 16–21) | Did not advance | Did not advance | Did not advance |

## 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 | Event | Group stage | Group stage | Group stage | Round 1 | Round 2 | Semifinal | Semifinal 2 | Final / BM | Final / BM |
| Team | Event | Opposition Result | Opposition Result | Rank | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| South Korea men's | Men's tournament | Israel W 6–5 | United States L 2–4 | 2 Q | Dominican Republic W 4–3 | Israel W 11–1 | Japan L 2–5 | United States L 2–7 | Dominican Republic L 6–10 | 4 |

### Team roster

The Korea Baseball Organization announced the team's final roster on June 15, 2021.

### Group play

| Pos | Teamvte | Pld | W | L | RF | RA | RD | PCT | GB | Qualification |
| 1 | United States | 2 | 2 | 0 | 12 | 3 | +9 | 1.000 | — | Round 2 |
| 2 | South Korea | 2 | 1 | 1 | 8 | 9 | −1 | .500 | 1 | Round 1 game #2 |
| 3 | Israel | 2 | 0 | 2 | 6 | 14 | −8 | .000 | 2 | Round 1 game #1 |
29 July 19:00 Yokohama Stadium :
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | R | H | E |
| Israel | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 5 | 7 | 0 |
| South Korea | 0 | 0 | 0 | 2 | 0 | 0 | 3 | 0 | 0 | 1 | 6 | 11 | 0 |
| WP: Oh Seung-hwan (1–0) LP: Jeremy Bleich (0–1) Home runs: ISR: Ian Kinsler (1), Ryan Lavarnway 2 (2) KOR: Oh Ji-hwan (1), Lee Jung-hoo (1), Hyun-soo Kim (1) Boxscore ||||||||||||||
31 July 19:00 Yokohama Stadium :
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| South Korea | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 5 | 0 |
| United States | 0 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | X | 4 | 6 | 0 |
| WP: Nick Martinez (1–0) LP: Ko Young-pyo (0–1) Sv: David Robertson (1) Home runs: KOR: None USA: Triston Casas (1), Nick Allen (1) Boxscore |||||||||||||

### Round 1

1 August 19:00 Yokohama Stadium :
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Dominican Republic | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 0 |
| South Korea | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 12 | 1 |
| WP: Oh Seung-hwan (2–0) LP: Luis Felipe Castillo (0–1) Home runs: DOM: Juan Francisco (1) KOR: None Boxscore |||||||||||||

### Round 2

2 August 12:00 Yokohama Stadium :
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Israel | 0 | 0 | 0 | 0 | 1 | 0 | 0 | X | X | 1 | 3 | 2 |
| South Korea (7) | 1 | 2 | 0 | 0 | 7 | 0 | 1 | X | X | 11 | 18 | 0 |
| WP: Cho Sang-woo (1–0) LP: Joey Wagman (0–2) Home runs: ISR: None KOR: Oh Ji-hwan (2), Hyun-soo Kim (2) Boxscore |||||||||||||

### Semifinals

4 August 19:00 Yokohama Stadium :
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| South Korea | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 7 | 1 |
| Japan | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 3 | X | 5 | 9 | 1 |
| WP: Hiromi Itoh (1–0) LP: Go Woo-suk (0–1) Sv: Ryoji Kuribayashi (2) Boxscore |||||||||||||
5 August 19:00 Yokohama Stadium :
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| South Korea | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 2 | 7 | 0 |
| United States | 0 | 1 | 0 | 1 | 0 | 5 | 0 | 0 | X | 7 | 9 | 1 |
| WP: Ryder Ryan (1–0) LP: Lee Eui-lee (0–1) Home runs: KOR: None USA: Jamie Westbrook (1) Boxscore |||||||||||||

### Bronze medal game

7 August 12:00 Yokohama Stadium :
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | R | H | E |
| Dominican Republic | 4 | 0 | 0 | 0 | 1 | 0 | 0 | 5 | 0 | 10 | 14 | 0 |
| South Korea | 0 | 1 | 0 | 1 | 4 | 0 | 0 | 0 | 0 | 6 | 13 | 0 |
| WP: Cristopher Mercedes (1–0) LP: Oh Seung-hwan (2–1) Sv: Jumbo Díaz (1) Home runs: DOM: Juan Francisco (2), Julio Rodríguez (1), Johan Mieses (2) KOR: Hyun-soo Kim (3) Boxscore |||||||||||||

## Basketball
### Summary

| Team | Event | Group stage | Group stage | Group stage | Group stage | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Team | Event | Opposition Score | Opposition Score | Opposition Score | Rank | Opposition Score | Opposition Score | Opposition Score | Rank |
| South Korea women's | Women's tournament | Spain L 69–73 | Canada L 53–74 | Serbia L 61–65 | 4 | Did not advance | Did not advance | Did not advance | Did not advance |

### 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

The roster was announced on 23 June 2021.

#### Group play

| Pos | Teamvte | Pld | W | L | PF | PA | PD | Pts | Qualification |
| 1 | Spain | 3 | 3 | 0 | 234 | 205 | +29 | 6 | Quarterfinals |
| 2 | Serbia | 3 | 2 | 1 | 207 | 214 | −7 | 5 | Quarterfinals |
| 3 | Canada | 3 | 1 | 2 | 208 | 201 | +7 | 4 | |
| 4 | South Korea | 3 | 0 | 3 | 183 | 212 | −29 | 3 | |
* 26 July 2021 (2021-07-26) 10:00 v
* Boxscore
| South Korea | 69–73 | Spain |
| Scoring by quarter: 15–16, 20–17, 18–21, 16–19 |||
| Pts: Kang 26 Rebs: Park Ji-s. 10 Asts: Park H. 5 | | Pts: Ndour 28 Rebs: Gil 14 Asts: Ouviña 8 |
* Saitama Super Arena, Saitama Referees: Ferdinand Pascual (PHI), Andreia Silva (BRA), Kingsley Ojeaburu (NGR)
* 29 July 2021 (2021-07-29) 10:00 v
* Boxscore
| Canada | 74–53 | South Korea |
| Scoring by quarter: 16–15, 17–13, 16–11, 25–14 |||
| Pts: Carleton 18 Rebs: Achonwa 10 Asts: Achonwa 5 | | Pts: Park Ji-s. 15 Rebs: Park Ji-s. 11 Asts: three players 3 |
* Saitama Super Arena, Saitama Referees: Amy Bonner (USA), James Boyer (AUS), Gizella Györgyi (NOR)
* 1 August 2021 (2021-08-01) 21:00 v
* Boxscore
| South Korea | 61–65 | Serbia |
| Scoring by quarter: 10–17, 14–15, 20–18, 17–15 |||
| Pts: Park Ji-h 17 Rebs: Park Ji-s. 11 Asts: Park Ji-h., Park Ji-s. 5 | | Pts: Crvendakić 15 Rebs: Vasić 10 Asts: three players 4 |
* Saitama Super Arena, Saitama Referees: Ferdinand Pascual (PHI), Amy Bonner (USA), Andreia Silva (BRA)

## 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.
| Athlete | Event | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final | Final |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Im Ae-ji | Women's featherweight | Bye | Nicolson (AUS) L 1–4 | Did not advance | Did not advance | Did not advance | Did not advance |
| Oh Yeon-ji | Women's lightweight | Bye | Potkonen (FIN) L 1–4 | Did not advance | Did not advance | Did not advance | Did not advance |

## 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.
| Athlete | Event | Heats | Heats | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank | Time | Rank |
| Cho Kwang-hee | Men's K-1 200 m | 35.738 | 3 QF | 35.048 | 1 SF | 36.094 | 6 FB | 36.440 | 13 |
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.
| Athlete | Event | Time | Rank |
| Na Ah-reum | Women's road race | 4:01:08 | 38 |

### 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

| Athlete | Event | Qualification | Qualification | Round 1 | Repechage 1 | Round 2 | Repechage 2 | Round 3 | Repechage 3 | Quarterfinals | Semifinals | Final | Final |
| Athlete | Event | Time Speed (km/h) | Rank | Opposition Rank | Opposition Rank | Opposition Rank | Opposition Rank | Opposition Rank | Opposition Rank | Opposition Rank | Opposition Rank | Opposition Rank | Rank |
| Lee Hye-jin | Women's sprint | 10.904 66.031 | 21 Q | Gros (FRA) L | Godby (USA) Shmeleva (ROC) L | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

#### Keirin

| Athlete | Event | Round 1 | Repechage | Quarterfinals | Semifinals | Final |
| Athlete | Event | Rank | Rank | Rank | Rank | Rank |
| Lee Hye-jin | Women's keirin | 3 R | 3 | Did not advance | Did not advance | Did not advance |

## 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.
| Athlete | Event | Preliminary | Preliminary | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank | Points | Rank |
| Kim Yeong-nam | Men's 3 m springboard | 286.80 | 28 | Did not advance | Did not advance | Did not advance | Did not advance |
| Kim Yeong-taek | Men's 10 m platform | 366.80 | 18 Q | 374.90 | 15 | Did not advance | Did not advance |
| Woo Ha-ram | Men's 3 m springboard | 452.45 | 5 Q | 403.15 | 12 Q | 481.85 | 4 |
| Woo Ha-ram | Men's 10 m platform | 427.25 | 7 Q | 374.50 | 16 | Did not advance | Did not advance |
| Kim Yeong-nam Woo Ha-ram | Men's 10 m synchronized platform | — | — | — | — | 396.12 | 7 |
| Kim Su-ji | Women's 3 m springboard | 304.20 | 7 Q | 283.90 | 15 | Did not advance | Did not advance |
| Kwon Ha-lim | Women's 10 m platform | 278.00 | 19 | Did not advance | Did not advance | Did not advance | Did not advance |

## 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

| Athlete | Horse | Event | Grand Prix | Grand Prix | Grand Prix Freestyle | Grand Prix Freestyle | Overall | Overall |
| Athlete | Horse | Event | Score | Rank | Technical | Artistic | Score | Rank |
| Kim Dong-seon | Belstaff | Individual | 63.447 | 55 | Did not advance | Did not advance | Did not advance | Did not advance |
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

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final | Final |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Kweon Young-jun | Épée | Bye | Verwijlen (NED) L 10–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Ma Se-geon | Épée | Petrov (KGZ) L 7–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Park Sang-young | Épée | Bye | Hoyle (USA) W 15–10 | Minobe (JPN) W 15–6 | Siklósi (HUN) L 12–15 | Did not advance | Did not advance | Did not advance |
| Kweon Young-jun Ma Se-geon Park Sang-young Song Jae-ho | Team épée | — | — | Bye | Switzerland (SUI) W 44–39 | Japan (JPN) L 38–45 | China (CHN) W 45–42 | |
| Lee Kwang-hyun | Foil | Bye | Borodachev (ROC) L 14–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Gu Bon-gil | Sabre | Bye | Szabo (GER) L 8–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kim Jung-hwan | Sabre | Bye | Lokhanov (ROC) W 15–11 | Dershwitz (USA) W 15–9 | Ibragimov (ROC) W 15–14 | Samele (ITA) L 12–15 | Bazadze (GEO) W 15–11 | |
| Oh Sang-uk | Sabre | Bye | Mackiewicz (USA) W 15–7 | Amer (EGY) W 15–9 | Bazadze (GEO) L 13–15 | Did not advance | Did not advance | Did not advance |
| Gu Bon-gil Kim Jung-hwan Oh Sang-uk Kim Jun-ho | Team sabre | — | — | Bye | Egypt (EGY) W 45–39 | Germany (GER) W 45–42 | Italy (ITA) W 45–26 | |

### Women

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinal | Semifinal | Final | Final |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Choi In-jeong | Épée | Bye | Murtazaeva (ROC) L 11–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kang Young-mi | Épée | Bye | Sato (JPN) L 14–15 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Song Se-ra | Épée | Bye | Holmes (USA) W 15–13 | Popescu (ROU) L 6–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Choi In-jeong Kang Young-mi Song Se-ra Lee Hye-in | Team épée | — | — | — | United States (USA) W 38–33 | China (CHN) W 38–29 | Estonia (EST) L 32–36 | |
| Jeon Hee-sook | Foil | Bye | Azuma (JPN) W 11–10 | Chen Qy (CHN) W 14–11 | Deriglazova (ROC) L 7–15 | Did not advance | Did not advance | Did not advance |
| Choi Soo-yeon | Sabre | Bye | Berder (FRA) W 15–11 | Márton (HUN) L 12–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Kim Ji-yeon | Sabre | Bye | Hafez (EGY) W 15–4 | Zagunis (USA) L 12–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Yoon Ji-su | Sabre | Bye | Criscio (ITA) W 15–11 | Dayibekova (UZB) L 12–15 | Did not advance | Did not advance | Did not advance | Did not advance |
| Choi Soo-yeon Kim Ji-yeon Yoon Ji-su Seo Ji-yeon | Team sabre | — | — | Bye | Hungary (HUN) W 45–40 | ROC L 26–45 | Italy (ITA) W 45–42 | |

## Football
### Summary

Key:
* A.E.T – After extra time.
* P – Match decided by penalty-shootout.
| Team | Event | Group Stage | Group Stage | Group Stage | Group Stage | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Team | Event | Opposition Score | Opposition Score | Opposition Score | Rank | Opposition Score | Opposition Score | Opposition Score | Rank |
| South Korea men's | Men's tournament | New Zealand L 0–1 | Romania W 4–0 | Honduras W 6–0 | 1 Q | Mexico L 3–6 | Did not advance | Did not advance | Did not advance |

### 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

South Korea's final squad was announced on 2 July 2021.
Head coach: Kim Hak-bum
| No. | Pos. | Player | Date of birth (age) | Caps | Goals | Club |
| 1 | 1GK | Song Bum-keun | (1997-10-15)15 October 1997 (aged 23) | 19 | 0 | Jeonbuk Hyundai Motors |
| 2 | 2DF | Lee You-hyeon | (1997-02-08)8 February 1997 (aged 24) | 15 | 0 | Jeonbuk Hyundai Motors |
| 3 | 2DF | Kim Jae-woo | (1998-02-06)6 February 1998 (aged 23) | 10 | 1 | Daegu |
| 4 | 2DF | Park Ji-soo* | (1994-06-13)13 June 1994 (aged 27) | 0 | 0 | Gimcheon Sangmu |
| 5 | 2DF | Jeong Tae-wook | (1997-05-16)16 May 1997 (aged 24) | 19 | 2 | Daegu |
| 6 | 3MF | Jeong Seung-won | (1997-02-27)27 February 1997 (aged 24) | 13 | 0 | Ulsan Hyundai |
| 7 | 3MF | Kwon Chang-hoon* | (1994-06-30)30 June 1994 (aged 27) | 21 | 11 | SC Freiburg |
| 8 | 3MF | Lee Kang-in | (2001-02-19)19 February 2001 (aged 20) | 3 | 0 | Valencia |
| 9 | 4FW | Song Min-kyu | (1999-09-12)12 September 1999 (aged 21) | 5 | 1 | Pohang Steelers |
| 10 | 3MF | Lee Dong-gyeong | (1997-09-20)20 September 1997 (aged 23) | 14 | 10 | Ulsan Hyundai |
| 11 | 4FW | Lee Dong-jun | (1997-02-01)1 February 1997 (aged 24) | 15 | 7 | Ulsan Hyundai |
| 12 | 2DF | Seol Young-woo | (1998-12-05)5 December 1998 (aged 22) | 5 | 0 | Ulsan Hyundai |
| 13 | 2DF | Kim Jin-ya | (1998-06-30)30 June 1998 (aged 23) | 26 | 1 | Seoul |
| 14 | 3MF | Kim Dong-hyun | (1997-06-11)11 June 1997 (aged 24) | 15 | 0 | Gangwon |
| 15 | 3MF | Won Du-jae | (1997-11-18)18 November 1997 (aged 23) | 13 | 0 | Ulsan Hyundai |
| 16 | 4FW | Hwang Ui-jo* | (1992-08-28)28 August 1992 (aged 28) | 24 | 14 | Bordeaux |
| 17 | 4FW | Um Won-sang | (1999-01-06)6 January 1999 (aged 22) | 16 | 1 | Gwangju |
| 18 | 1GK | Ahn Joon-soo | (1998-01-28)28 January 1998 (aged 23) | 5 | 0 | Busan IPark |
| 19 | 2DF | Kang Yoon-sung | (1997-07-01)1 July 1997 (aged 24) | 13 | 0 | Jeju United |
| 20 | 2DF | Lee Sang-min (captain) | (1998-01-01)1 January 1998 (aged 23) | 21 | 1 | Seoul E-Land |
| 21 | 3MF | Kim Jin-gyu | (1997-02-24)24 February 1997 (aged 24) | 10 | 1 | Busan IPark |
| 22 | 1GK | An Chan-gi | (1998-04-06)6 April 1998 (aged 23) | 4 | 0 | Suwon Samsung Bluewings |
* Overage player.

#### Group play

| Pos | Teamvte | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | South Korea | 3 | 2 | 0 | 1 | 10 | 1 | +9 | 6 | Advance to knockout stage |
| 2 | New Zealand | 3 | 1 | 1 | 1 | 3 | 3 | 0 | 4 | Advance to knockout stage |
| 3 | Romania | 3 | 1 | 1 | 1 | 1 | 4 | −3 | 4 | |
| 4 | Honduras | 3 | 1 | 0 | 2 | 3 | 9 | −6 | 3 | |

#### Quarterfinal
## Golf

South Korea entered two male and four female golfers into the Olympic tournament.
| Athlete | Event | Round 1 | Round 2 | Round 3 | Round 4 | Total | Total | Total |
| Athlete | Event | Score | Score | Score | Score | Score | Par | Rank |
| Im Sung-jae | Men's | 70 | 73 | 63 | 68 | 274 | −10 | =22 |
| Kim Si-woo | Men's | 68 | 71 | 70 | 67 | 276 | −8 | =32 |
| Ko Jin-young | Women's | 68 | 67 | 71 | 68 | 274 | −10 | =9 |
| Inbee Park | Women's | 69 | 70 | 71 | 69 | 279 | −5 | =23 |
| Kim Sei-young | Women's | 69 | 69 | 68 | 68 | 274 | −10 | =9 |
| Kim Hyo-joo | Women's | 70 | 68 | 70 | 67 | 275 | −9 | =15 |

## 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.

#### Team

| Athlete | Event | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final | Final | Final | Final | Final |
| Athlete | Event | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank |
| Athlete | Event | F | PH | R | V | PB | HB | Total | Rank | F | PH | R | V | PB | HB | Total | Rank |
| Kim Han-sol | Team | 14.900 Q | 11.833 | 13.600 | 14.333 | 13.666 | 12.800 | 81.032 | 39 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Lee Jun-ho | Team | 13.733 | 12.900 | 13.700 | 14.333 | 14.266 | 13.366 | 82.398 | 28 Q | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Ryu Sung-hyun | Team | 15.066 Q | 12.900 | 13.166 | 14.500 | 11.966 | 13.133 | 80.731 | 41 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Yang Hak-seon | Team | — | — | — | 14.366 | — | — | 14.366 | 9 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Total | Team | 43.699 | 37.633 | 40.466 | 43.799 | 39.898 | 39.299 | 244.794 | 11 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

#### Individual

| Athlete | Event | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final | Final | Final | Final | Final |
| Athlete | Event | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank |
| Athlete | Event | F | PH | R | V | PB | HB | Total | Rank | F | PH | R | V | PB | HB | Total | Rank |
| Kim Han-sol | Floor | 14.900 | — | — | — | — | — | 14.900 | 5 Q | 13.066 | — | — | — | — | — | 13.066 | 8 |
| Lee Jun-ho | All-around | See team results | See team results | See team results | See team results | See team results | See team results | See team results | See team results | 13.966 | 12.766 | 13.466 | 13.800 | 14.166 | 12.300 | 80.464 | 22 |
| Ryu Sung-hyun | Floor | 15.066 | — | — | — | — | — | 15.066 | 3 Q | 14.233 | — | — | — | — | — | 14.233 | 4 |
| Shin Jea-hwan | Vault | — | — | — | 14.866 | — | — | — | 1 Q | — | — | — | 14.783 | — | — | — | |

#### Women

| Athlete | Event | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final | Final | Final |
| Athlete | Event | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank | Apparatus | Apparatus | Apparatus | Apparatus | Total | Rank |
| Athlete | Event | V | UB | BB | F | Total | Rank | V | UB | BB | F | Total | Rank |
| Lee Yun-seo | All-around | 13.400 | 14.333 | 12.841 | 12.966 | 53.540 | 29 Q | 13.400 | 14.300 | 11.266 | 12.666 | 51.632 | 21 |
| Yeo Seo-jeong | Vault | 14.800 | — | — | — | 14.800 | 5 Q | 14.733 | — | — | — | 14.733 | |

## Handball
### Summary

Key:
* ET: After extra time
* P – Match decided by penalty-shootout.
| Team | Event | Group Stage | Group Stage | Group Stage | Group Stage | Group Stage | Group Stage | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Team | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank | Opposition Score | Opposition Score | Opposition Score | Rank |
| South Korea women's | Women's tournament | Norway L 27–39 | Netherlands L 36–43 | Japan W 27–24 | Montenegro L 26–28 | Angola D 31–31 | 4 Q | Sweden L 30–39 | Did not advance | Did not advance | Did not advance |

### 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

The squad was announced on 14 June 2021.
Head coach: Kang Jae-won
* No.
* Pos.
* Name
* Date of birth (age)
* Height
* App.
* Goals
* Club
* 1
* GK
* Ju Hui
* (1989-11-04)4 November 1989 (aged 31)
* 1.80 m
* 40
* 0
* Busan
* 10
* P
* Won Seon-pil
* (1994-08-06)6 August 1994 (aged 26)
* 1.74 m
* 5
* 14
* Incheon
* 11
* RB
* Ryu Eun-hee
* (1990-02-24)24 February 1990 (aged 31)
* 1.79 m
* 83
* 297
* Győri Audi ETO KC
* 12
* GK
* Jeong Jin-hui
* (1999-03-24)24 March 1999 (aged 22)
* 1.80 m
* 5
* 0
* Korea National Sport University
* 13
* RW
* Kim Yun-ji
* (2000-01-16)16 January 2000 (aged 21)
* 1.70 m
* 0
* 0
* Samcheok
* 15
* LW
* Choi Su-min
* (1990-01-09)9 January 1990 (aged 31)
* 1.77 m
* 49
* 155
* SK Sugar Gliders
* 17
* LB
* Sim Hae-in
* (1987-10-31)31 October 1987 (aged 33)
* 1.78 m
* 64
* 117
* Busan
* 19
* P
* Kang Eun-hye
* (1996-04-17)17 April 1996 (aged 25)
* 1.86 m
* 8
* 21
* Busan
* 21
* LW
* Jo Ha-rang
* (1991-07-15)15 July 1991 (aged 30)
* 1.65 m
* 9
* 67
* Daegu
* 22
* P
* Gim Bo-eun
* (1997-12-08)8 December 1997 (aged 23)
* 1.76 m
* 5
* 9
* Samcheok
* 23
* CB
* Lee Mi-gyeong
* (1991-10-02)2 October 1991 (aged 29)
* 1.70 m
* 43
* 65
* Busan
* 24
* CB
* Kang Kyung-min
* (1996-11-08)8 November 1996 (aged 24)
* 1.65 m
* 12
* 30
* Gwangju
* 25
* RB
* Jung Yu-ra
* (1992-02-06)6 February 1992 (aged 29)
* 1.70 m
* 23
* 37
* Daegu
* 27
* LB
* Kim Jin-yi
* (1993-06-20)20 June 1993 (aged 28)
* 1.80 m
* 50
* 115
* Busan
* 34
* RW
* Jung Ji-in
* (2000-07-18)18 July 2000 (aged 21)
* 1.80 m
* 5
* 13
* Korea National Sport University

#### Group play

| Pos | Teamvte | Pld | W | D | L | GF | GA | GD | Pts | Qualification |
| 1 | Norway | 5 | 5 | 0 | 0 | 170 | 123 | +47 | 10 | Quarter-finals |
| 2 | Netherlands | 5 | 4 | 0 | 1 | 169 | 143 | +26 | 8 | Quarter-finals |
| 3 | Montenegro | 5 | 2 | 0 | 3 | 139 | 142 | −3 | 4 | Quarter-finals |
| 4 | South Korea | 5 | 1 | 1 | 3 | 147 | 165 | −18 | 3 | Quarter-finals |
| 5 | Angola | 5 | 1 | 1 | 3 | 130 | 156 | −26 | 3 | |
| 6 | Japan (H) | 5 | 1 | 0 | 4 | 124 | 150 | −26 | 2 | |
* 1 2 South Korea 31–31 Angola
| 25 July 2021 16:15 | Norway | 39–27 | South Korea | Yoyogi National Gymnasium, Tokyo Referees: Bonaventura, Bonaventura (FRA) |
| 25 July 2021 16:15 | Brattset Dale 11 | (18–10) | Sim 5 | Yoyogi National Gymnasium, Tokyo Referees: Bonaventura, Bonaventura (FRA) |
| 25 July 2021 16:15 | 5× | Report | 1× 2× | Yoyogi National Gymnasium, Tokyo Referees: Bonaventura, Bonaventura (FRA) |
| 27 July 2021 16:15 | South Korea | 36–43 | Netherlands | Yoyogi National Gymnasium, Tokyo Referees: Lah, Sok (SLO) |
| 27 July 2021 16:15 | Ryu 10 | (15–19) | Abbingh 6 | Yoyogi National Gymnasium, Tokyo Referees: Lah, Sok (SLO) |
| 27 July 2021 16:15 | 1× 2× | Report | 2× 7× | Yoyogi National Gymnasium, Tokyo Referees: Lah, Sok (SLO) |
| 29 July 2021 14:15 | Japan | 24–27 | South Korea | Yoyogi National Gymnasium, Tokyo Referees: Kurtagic, Wetterwik (SWE) |
| 29 July 2021 14:15 | Kondo 7 | (11–12) | Ryu 9 | Yoyogi National Gymnasium, Tokyo Referees: Kurtagic, Wetterwik (SWE) |
| 29 July 2021 14:15 | 1× 3× | Report | 3× | Yoyogi National Gymnasium, Tokyo Referees: Kurtagic, Wetterwik (SWE) |
| 31 July 2021 11:00 | Montenegro | 28–26 | South Korea | Yoyogi National Gymnasium, Tokyo Referees: El-Saied, El-Saied (EGY) |
| 31 July 2021 11:00 | Radičević 6 | (13–11) | Lee 10 | Yoyogi National Gymnasium, Tokyo Referees: El-Saied, El-Saied (EGY) |
| 31 July 2021 11:00 | 2× 4× | Report | 3× | Yoyogi National Gymnasium, Tokyo Referees: El-Saied, El-Saied (EGY) |
| 2 August 2021 09:00 | South Korea | 31–31 | Angola | Yoyogi National Gymnasium, Tokyo Referees: Bonaventura, Bonaventura (FRA) |
| 2 August 2021 09:00 | Jung, Kang E. 7 | (16–17) | Guialo 8 | Yoyogi National Gymnasium, Tokyo Referees: Bonaventura, Bonaventura (FRA) |
| 2 August 2021 09:00 | | Report | 7× | Yoyogi National Gymnasium, Tokyo Referees: Bonaventura, Bonaventura (FRA) |

#### Quarterfinal

| 4 August 2021 17:00 | Sweden | 39–30 | South Korea | Yoyogi National Gymnasium, Tokyo Referees: Alpaidze, Berezkina (RUS) |
| 4 August 2021 17:00 | three players 6 | (21–13) | Kang K. 8 | Yoyogi National Gymnasium, Tokyo Referees: Alpaidze, Berezkina (RUS) |
| 4 August 2021 17:00 | 1× 3× | Report | 4× | Yoyogi National Gymnasium, Tokyo Referees: Alpaidze, Berezkina (RUS) |

## Judo
### Men

| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Repechage | Final | Final |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Kim Won-jin | −60 kg | — | Bye | Takabatake (BRA) W 10–00 | Smetov (KAZ) L 00–10 | Did not advance | Chkhvimiani (GEO) W 10–00 | Mkheidze (FRA) L 00–10 | =5 |
| An Ba-ul | −66 kg | — | Bye | Chinchila (CRC) W 10–00 | Gomboc (SLO) W 10–00 | Margvelashvili (GEO) L 00–01 | Bye | Lombardo (ITA) W 10–00 | |
| An Chang-rim | −73 kg | Bye | Basile (ITA) W 01–00 | Turaev (UZB) W 01–00 | Butbul (ISR) W 01–00 | Shavdatuashvili (GEO) L 00–10 | Bye | Orujov (AZE) W 01–00 | |
| Lee Sung-ho | −81 kg | Bye | Elias (LBN) W 10–00 | Grigalashvili (GEO) L 00–10 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Gwak Dong-han | −90 kg | Bye | Anani (GHA) W 10–00 | Trippel (GER) L 00–10 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Cho Gu-ham | −100 kg | — | Bye | Kukolj (SRB) W 10–00 | Frey (GER) W 01–00 | Fonseca (POR) W 01–00 | Bye | Wolf (JPN) L 00–10 | |
| Kim Min-jong | +100 kg | — | Bye | Harasawa (JPN) L 00–10 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

### Women

| Athlete | Event | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Repechage | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Kang Yu-jeong | −48 kg | Štangar (SLO) L 01–10 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Park Da-sol | −52 kg | Cesar (GBS) W 11–00 | Kuziutina (ROC) W 01–00 | Buchard (FRA) L 00–10 | Did not advance | Pupp (HUN) L 00–01 | Did not advance | =7 |
| Kim Ji-su | −57 kg | Roper (PAN) W 10–00 | Cysique (FRA) L 00–01 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Han Hee-ju | −63 kg | Trstenjak (SLO) L 00–01 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Kim Seong-yeon | −70 kg | Sophina (CMR) W 10–00 | Polleres (AUT) L 00–01 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Yoon Hyun-ji | −78 kg | Papadakis (USA) W 10–00 | Powell (GBR) W 11–00 | Steenhuis (NED) W 10–00 | Malonga (FRA) L 00–10 | Bye | Aguiar (BRA) L 00–10 | =5 |
| Han Mi-jin | +78 kg | Savelkouls (NED) W 01–00 | Slutskaya (BLR) W 10–00 | Kindzerska (AZE) L 00–11 | Did not advance | Sayit (TUR) L 00–10 | Did not advance | =7 |

### Mixed

| Athlete | Event | Round of 16 | Quarterfinals | Semifinals | Repechage | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| An Chang-rim Gwak Dong-han Kim Min-jong Han Mi-jin Kim Ji-su Kim Seong-yeon | Team | Mongolia (MGL) L 1–4 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

## Karate

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

| Athlete | Event | Elimination round | Elimination round | Ranking round | Ranking round | Final / BM | Final / BM |
| Athlete | Event | Score | Rank | Score | Rank | Opposition Result | Rank |
| Park Hee-jun | Men's kata | 25.62 | 3 Q | 25.98 | 3 q | Sofuoğlu (TUR) L 26.14–27.26 | 5 |

## 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.
| Athlete | Event | Fencing (épée one touch) | Fencing (épée one touch) | Fencing (épée one touch) | Fencing (épée one touch) | Swimming (200 m freestyle) | Swimming (200 m freestyle) | Swimming (200 m freestyle) | Riding (show jumping) | Riding (show jumping) | Riding (show jumping) | Combined: shooting/running (10 m air pistol)/(3200 m) | Combined: shooting/running (10 m air pistol)/(3200 m) | Combined: shooting/running (10 m air pistol)/(3200 m) | Total points | Final rank |
| Athlete | Event | RR | BR | Rank | MP points | Time | Rank | MP points | Penalties | Rank | MP points | Time | Rank | MP Points | Total points | Final rank |
| Jun Woong-tae | Men's | 21-14 | 0 | 9 | 226 | 1:57.23 | 6 | 316 | 11 | 11 | 289 | 11:01.84 | 7 | 639 | 1470 | |
| Jung Jin-hwa | Men's | 23-12 | 1 | 5 | 238 | 1:57.85 | 7 | 315 | 7 | 6 | 293 | 11:21.95 | 17 | 619 | 1466 | 4 |
| Kim Se-hee | Women's | 24-11 | 2 | 2 | 246 | 2:16.36 | 21 | 278 | 14 | 18 | 286 | 13:00.70 | 24 | 520 | 1330 | 11 |
| Kim Sun-woo | Women's | 19-16 | 0 | 14 | 214 | 2:16.36 | 21 | 278 | 16 | 21 | 284 | 13:07.80 | 27 | 513 | 1296 | 17 |

## 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.
| Athlete | Event | Heats | Heats | Repechage | Repechage | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank | Time | Rank | Time | Rank |
| Jeong Hye-jeong | Women's single sculls | 8:12.15 | 5 R | 8:26.73 | 2 QF | 8:38.70 | 6 SC/D | 8:06.32 | 6 FD | 8:06.13 | 24 |
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

| Team | Event | Group stage | Group stage | Group stage | Group stage | Quarterfinal | 9–12th place Semifinal | 11th place match | 11th place match |
| Team | Event | Opposition Score | Opposition Score | Opposition Score | Rank | Opposition Score | Opposition Score | Opposition Score | Rank |
| South Korea men's | Men's tournament | New Zealand L 5–50 | Australia L 5–42 | Argentina L 0–56 | 4 | — | Ireland L 0–31 | Japan L 19–31 | 12 |

### 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

South Korea's 12-man squad plus one alternate was named on 6 July 2021.
Head coach: Seo Chun-oh
| No. | Pos. | Player | Date of birth (age) | Events | Points |
| 1 | FW | Han Kun-kyu (c) | (1987-01-22)22 January 1987 (aged 34) | 4 | 20 |
| 2 | FW | Kim Hyun-soo | (1988-11-08)8 November 1988 (aged 32) | 4 | 25 |
| 3 | FW | Andre Jin Coquillard | (1991-01-15)15 January 1991 (aged 30) | 2 | 10 |
| 4 | BK | Chang Yong-heung | (1993-11-12)12 November 1993 (aged 27) | 0 | 0 |
| 5 | BK | Lee Seong-bae | (1990-04-07)7 April 1990 (aged 31) | 3 | 13 |
| 6 | BK | Kim Nam-uk | (1990-02-05)5 February 1990 (aged 31) | 2 | 0 |
| 7 | BK | Jang Jeong-min | (1994-11-10)10 November 1994 (aged 26) | 2 | 27 |
| 8 | FW | Jang Seong-min | (1992-08-22)22 August 1992 (aged 28) | 2 | 5 |
| 9 | BK | Park Wan-yong (c) | (1984-06-02)2 June 1984 (aged 37) | 5 | 25 |
| 10 | FW | Lee Jin-kyu | (1994-07-04)4 July 1994 (aged 27) | 1 | 0 |
| 11 | FW | Choi Seong-deok | (1999-05-31)31 May 1999 (aged 22) | 0 | 0 |
| 12 | BK | Jeong Yeon-sik | (1993-05-08)8 May 1993 (aged 28) | 1 | 0 |
| 13 | BK | Kim Gwong-min | (1988-04-02)2 April 1988 (aged 33) | 0 | 0 |

#### Group play

| Pos | Teamvte | Pld | W | D | L | PF | PA | PD | Pts | Qualification |
| 1 | New Zealand | 3 | 3 | 0 | 0 | 99 | 31 | +68 | 9 | Quarter-finals |
| 2 | Argentina | 3 | 2 | 0 | 1 | 99 | 54 | +45 | 7 | Quarter-finals |
| 3 | Australia | 3 | 1 | 0 | 2 | 73 | 48 | +25 | 5 | Quarter-finals |
| 4 | South Korea | 3 | 0 | 0 | 3 | 10 | 148 | −138 | 3 | |
* 26 July 2021 (2021-07-26) 10:00
| New Zealand | 50–5 | South Korea |
| Try: Knewstubb 2' c Mikkelson (2) 7' c, 8' m Penalty try 8' Warbrick (2) 10' c, 14' m Nanai-Seturo 12' m McGarvey-Black 13' c Con: Knewstubb (2/3) 2', 7' McGarvey-Black (2/3) 10', 13' Baker (0/1) | (Tokyo 2020) | Try: Jeong 5' m Con: Lee (0/1) |
* Tokyo Stadium, Tokyo Attendance: 0 Referee: Sam Grove-White (Scotland)
* 26 July 2021 (2021-07-26) 18:00
| Australia | 42–5 | South Korea |
| Try: Longbottom 1' c Roache 2' c Miller (2) 7' c, 8' c Malouf 10' c Pietsch 13' c Con: Longbottom (4/4) 1', 2', 7', 10' Miller (1/1) 8' Coward (1/1) 13' | (Tokyo 2020) | Try: Coquillard 9' m Con: Coquillard (0/1) |
* Tokyo Stadium, Tokyo Attendance: 0 Referee: Nehuén Jauri Rivero (Argentina)
* 27 July 2021 (2021-07-27) 10:00
| Argentina | 56–0 | South Korea |
| Try: Bazán 1' c Osadczuk 2' c Mare 4' c González 7' c Isgro 8' c Schulz 9' c Revol 12' c Mendy 13' c Con: Mare (5/5) 1', 3', 4', 7', 8' Revol (2/2) 9', 13' del Mestre (1/1) 12' | (Tokyo 2020) | |
* Tokyo Stadium, Tokyo Attendance: 0 Referee: Matthew Rodden (Hong Kong)

#### 9–12th place playoff

* 27 July 2021 (2021-07-27) 16:30
| Ireland | 31–0 | South Korea |
| Try: Roche 1' m Conroy (2) 2' m, 13' c Mullin (2) 11' c, 14' c Con: Roche (0/2) Dardis (3/3) 12', 13', 14' | (Tokyo 2020) | |
* Tokyo Stadium, Tokyo Attendance: 0 Referee: Francisco González (Uruguay)

#### 11th place match

* 28 July 2021 (2021-07-28) 9:00
| South Korea | 19–31 | Japan |
| Try: Coquillard 1' c Jang 4' m Jeong 10' c Con: Coquillard (2/3) 1', 10' | (Tokyo 2020) | Try: Tuqiri 2' c Hikosaka 5' c Kano 7' m Matsui 8' c Hano 11' m Con: Kano (3/4) 2', 6', 8' Fujita (0/1) |
* Tokyo Stadium, Tokyo Attendance: 0 Referee: Richard Haughton (England)

## Sailing

South Korean sailors qualified one boat in each of the following classes through the 2018 Sailing World Championships, the class-associated Worlds, the 2018 Asian Games, and the continental regattas.
| Athlete | Event | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Race | Net points | Final rank |
| Athlete | Event | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | M* | Net points | Final rank |
| Cho Won-woo | Men's RS:X | 22 | 15 | 21 | 22 | 7 | 26 | 10 | 14 | 9 | 11 | 18 | 18 | EL | 167 | 17 |
| Ha Jee-min | Men's Laser | 20 | 8 | 26 | 7 | 7 | 10 | 6 | 14 | 10 | 6 | — | — | 10 | 98 | 7 |
| Park Gun-woo Cho Sung-min | Men's 470 | 17 | 16 | 14 | 15 | 3 | 17 | 15 | 14 | 1 | 9 | — | — | EL | 104 | 14 |
M = Medal race; EL = Eliminated – did not advance into the medal race

## Shooting

South Korean shooters achieved quota places for the following events by virtue of their best finishes at the 2018 ISSF World Championships, the 2019 ISSF World Cup series, and Asian Championships, as long as they obtained a minimum qualifying score (MQS) by May 31, 2020.
Fourteen shooters (seven per gender) were selected to the South Korean roster at the end of the national trials, with pistol ace and four-time gold medalist Jin Jong-oh leading them to his fifth consecutive Games and Kim Min-ji setting her historic comeback to the Games for the first time in 13 years. Meanwhile, Nam Tae-yun earned a direct place in the men's 10 m air rifle for the rescheduled Games as the highest-ranked shooter vying for qualification in the ISSF World Olympic Rankings of 6 June 2021.

### Men

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Han Dae-yoon | 25 m rapid fire pistol | 585 | 3 Q | 22 | 4 |
| Jin Jong-oh | 10 m air pistol | 576 | 15 | Did not advance | Did not advance |
| Kim Mo-se | 10 m air pistol | 579 | 6 Q | 115.8 | 8 |
| Kim Sang-do | 10 m air rifle | 625.1 | 24 | Did not advance | Did not advance |
| Kim Sang-do | 50 m rifle 3 positions | 1164 | 24 | Did not advance | Did not advance |
| Lee Jong-jun | Skeet | 121 | 13 | Did not advance | Did not advance |
| Nam Tae-yun | 10 m air rifle | 627.2 | 12 | Did not advance | Did not advance |
| Song Jong-ho | 25 m rapid fire pistol | DSQ | DSQ | Did not advance | Did not advance |

### Women

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Bae Sang-hee | 50 m rifle 3 positions | 1164 | 20 | Did not advance | Did not advance |
| Cho Eun-young | 50 m rifle 3 positions | 1155 | 32 | Did not advance | Did not advance |
| Choo Ga-eun | 10 m air pistol | 573 | 16 | Did not advance | Did not advance |
| Kim Bo-mi | 10 m air pistol | 570 | 24 | Did not advance | Did not advance |
| Kim Min-jung | 25 m pistol | 584 | 8 Q | 38 (+1) OR | |
| Kwak Jung-hye | 25 m pistol | 579 | 21 | Did not advance | Did not advance |
| Kwon Eun-ji | 10 m air rifle | 630.9 | 4 Q | 145.4 | 7 |
| Park Hee-moon | 10 m air rifle | 631.7 | 2 Q | 119.1 | 8 |

### Mixed

| Athlete | Event | Qualification | Qualification | Semifinal | Semifinal | Final / BM | Final / BM |
| Athlete | Event | Points | Rank | Points | Rank | Opposition Result | Rank |
| Kim Sang-do Park Hee-moon | 10 m air rifle team | 623.3 | 20 | Did not advance | Did not advance | Did not advance | Did not advance |
| Nam Tae-yun Kwon Eun-ji | 10 m air rifle team | 630.5 | 3 Q | 417.5 | 3 q | Kamenskiy / Karimova (ROC) L 9–17 | 4 |
| Jin Jong-oh Choo Ga-eun | 10 m air pistol team | 575 | 9 | Did not advance | Did not advance | Did not advance | Did not advance |
| Kim Mo-se Kim Bo-mi | 10 m air pistol team | 573 | 11 | Did not advance | Did not advance | Did not advance | Did not advance |

## Sport climbing

South Korea entered two sport climbers into the Olympic tournament. With the IFSC Asian Championships cancelled because of the travel restrictions brought by the COVID-19 pandemic, Chon Jong-won and Seo Chae-hyun received the unused berths respectively, as the continent's highest-ranked male and female sport climber vying for qualification, at the 2019 Worlds in Hachioji, Japan.
| Athlete | Event | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Qualification | Final | Final | Final | Final | Final | Final | Final | Final | Final |
| Athlete | Event | Speed | Speed | Boulder | Boulder | Lead | Lead | Lead | Total | Rank | Speed | Speed | Boulder | Boulder | Lead | Lead | Lead | Total | Rank |
| Athlete | Event | Best | Place | Result | Place | Hold | Time | Place | Total | Rank | Best | Place | Result | Place | Hold | Time | Place | Total | Rank |
| Chon Jong-won | Men's | 6.21 | 5 | 1T3z 3 10 | 10 | 26+ | 2:34 | 16 | 800.00 | 10 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Seo Chae-hyun | Women's | 10.01 | 17 | 2T4z 5 5 | 5 | 40+ | — | 1 | 85.00 | 2 Q | 9.85 | 8 | 0T0z 0 0 | 7 | 35+ | — | 2 | 112 | 8 |

## Swimming

South Korean swimmers further achieved qualifying standards in the following events (up to a maximum of 2 swimmers in each event at the Olympic Qualifying Time (OQT), and potentially 1 at the Olympic Selection Time (OST)):

### Men

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| Cho Sung-jae | 100 m breaststroke | 59.99 | 20 | Did not advance | Did not advance | Did not advance | Did not advance |
| Cho Sung-jae | 200 m breaststroke | 2:10.17 | 19 | Did not advance | Did not advance | Did not advance | Did not advance |
| Hwang Sun-woo | 50 m freestyle | 22.74 | 39 | Did not advance | Did not advance | Did not advance | Did not advance |
| Hwang Sun-woo | 100 m freestyle | 47.97 | 6 Q | 47.56 AS | 4 Q | 47.82 | 5 |
| Hwang Sun-woo | 200 m freestyle | 1:44.62 | 1 Q | 1:45.53 | 6 Q | 1:45.26 | 7 |
| Lee Ho-joon | 400 m freestyle | 3:53.23 | 26 | — | — | Did not advance | Did not advance |
| Lee Ju-ho | 100 m backstroke | 53.84 | =20 | Did not advance | Did not advance | Did not advance | Did not advance |
| Lee Ju-ho | 200 m backstroke | 1:56.77 | 4 Q | 1:56.93 | 11 | Did not advance | Did not advance |
| Moon Seung-woo | 100 m butterfly | 53.59 | 47 | Did not advance | Did not advance | Did not advance | Did not advance |
| Moon Seung-woo | 200 m butterfly | 1:58.09 | 28 | Did not advance | Did not advance | Did not advance | Did not advance |
| Hwang Sun-woo Kim Woo-min Lee Ho-joon Lee Yoo-yeon | 4 × 200 m freestyle relay | 7:15.03 | 13 | — | — | Did not advance | Did not advance |

### Women

| Athlete | Event | Heat | Heat | Semifinal | Semifinal | Final | Final |
| Athlete | Event | Time | Rank | Time | Rank | Time | Rank |
| An Se-hyeon | 100 m butterfly | 59.32 | 23 | Did not advance | Did not advance | Did not advance | Did not advance |
| Han Da-kyung | 400 m freestyle | 4:16.49 | 21 | — | — | Did not advance | Did not advance |
| Han Da-kyung | 800 m freestyle | 8:46.66 | 28 | — | — | Did not advance | Did not advance |
| Han Da-kyung | 1500 m freestyle | 16:33.59 | 28 | — | — | Did not advance | Did not advance |
| Kim Seo-yeong | 200 m individual medley | 2:11.54 | 15 Q | 2:11.38 | 12 | Did not advance | Did not advance |
| Lee Eun-ji | 100 m backstroke | 1:00.14 | 20 | Did not advance | Did not advance | Did not advance | Did not advance |
| Lee Eun-ji | 200 m backstroke | 2:11.72 | 18 | Did not advance | Did not advance | Did not advance | Did not advance |
| An Se-hyeon Han Da-kyung Jung Hyun-young Kim Seo-yeong | 4 × 200 m freestyle relay | 8:11.16 | 14 | — | — | Did not advance | Did not advance |

## Table tennis

South Korea entered six athletes into the table tennis competition at the Games. The men's and women's teams secured one of nine available places, respectively, at the 2020 World Olympic Qualification Event in Gondomar, Portugal, permitting a maximum of two starters to compete each in the men's and women's singles tournament.

### Men

| Athlete | Event | Preliminary | Round 1 | Round 2 | Round 3 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Jang Woo-jin | Singles | Bye | Bye | Bye | Drinkhall (GBR) W 4–1 | Calderano (BRA) L 3–4 | Did not advance | Did not advance | Did not advance | Did not advance |
| Jeoung Young-sik | Singles | Bye | Bye | Bye | Gionis (GRE) W 4–3 | Boll (GER) W 4–1 | Fan Zd (CHN) L 0–4 | Did not advance | Did not advance | Did not advance |
| Jang Woo-jin Jeoung Young-sik Lee Sang-su | Team | — | — | — | — | Slovenia (SLO) W 3–1 | Brazil (BRA) W 3–0 | China (CHN) L 0–3 | Japan (JPN) L 1–3 | 4 |

### Women

| Athlete | Event | Preliminary | Round 1 | Round 2 | Round 3 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Jeon Ji-hee | Singles | Bye | Bye | Bye | Yuan (FRA) W 4–3 | Liu (AUT) W 4–1 | Ito (JPN) L 0–4 | Did not advance | Did not advance | Did not advance |
| Shin Yu-bin | Singles | Bye | Edghill (GUY) W 4–0 | Ni Xl (LUX) W 4–3 | Doo H K (HKG) L 2–4 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Choi Hyo-joo Jeon Ji-hee Shin Yu-bin | Team | — | — | — | — | Poland (POL) W 3–0 | Germany (GER) L 2–3 | Did not advance | Did not advance | Did not advance |

### Mixed

| Athlete | Event | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Lee Sang-su Jeon Ji-hee | Doubles | Assar / Meshref (EGY) W 4–1 | Lin Y-j / Cheng I-c (TPE) L 2–4 | Did not advance | Did not advance | Did not advance |

## Taekwondo

South Korea entered six athletes into the taekwondo competition at the Games. Jang Jun (men's 58 kg), double Olympic medalist Lee Dae-hoon (men's 68 kg), In Kyo-don (men's +80 kg), and world champions Sim Jae-young (women's 49 kg), Lee Ah-reum (women's 57 kg), and Lee Da-bin (women's +67 kg) qualified directly for their respective weight classes by finishing among the top five taekwondo practitioners at the end of the WT Olympic Rankings.
| Athlete | Event | Qualification | Round of 16 | Quarterfinals | Semifinals | Repechage 1 | Repechage 2 | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Jang Jun | Men's −58 kg | — | Barbosa (PHI) W 26–6 | Vicente (ESP) W 24–19 | Jendoubi (TUN) L 19–25 | — | Bye | Salim (HUN) W 46–16 PTG | |
| Lee Dae-hoon | Men's −68 kg | Bye | Rashitov (UZB) L 19–21 | Did not advance | Did not advance | Fofana (MLI) W 11–9 | Hosseini (IRI) W 30–21 | Zhao S (CHN) L 15–17 | =5 |
| In Kyo-don | Men's +80 kg | — | Mansouri (AFG) W 13–12 | Zhaparov (KAZ) W 10–2 | Georgievski (MKD) L 6–12 | — | Bye | Trajkovič (SLO) W 5–4 | |
| Sim Jae-young | Women's −49 kg | Bye | El Bouchti (MAR) W 19–10 | Yamada (JPN) L 7–16 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Lee Ah-reum | Women's −57 kg | Bye | Lo C-l (TPE) L 18–20 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |
| Lee Da-bin | Women's +67 kg | — | Traoré (CIV) W 17–13 | Rodríguez (DOM) W 23–14 | Walkden (GBR) W 25–24 | — | Bye | Mandić (SRB) L 6–10 | |

## Tennis

South Korea entered one tennis player into the Olympic tournament, Kwon Soon-woo qualified for the men's singles.
| Athlete | Event | Round of 64 | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Final / BM |
| Athlete | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Kwon Soon-woo | Men's singles | Tiafoe (USA) L 3–6, 2–6 | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance | Did not advance |

## Volleyball
### Indoor
#### Summary

| Team | Event | Group stage | Group stage | Group stage | Group stage | Group stage | Group stage | Quarterfinal | Semifinal | Final / BM | Final / BM |
| Team | Event | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank | Opposition Score | Opposition Score | Opposition Score | Rank |
| South Korea women's | Women's tournament | Brazil L 0–3 | Kenya W 3–0 | Dominican Republic W 3–2 | Japan W 3–2 | Serbia L 0–3 | 3 Q | Turkey W 3–2 | Brazil L 0–3 | Serbia L 0–3 | 4 |

#### Women's tournament

The South Korean women's volleyball team qualified for the Olympics by winning the final match and securing an outright berth at the Asian Olympic Qualification Tournament in Nakhon Ratchasima, Thailand.

##### Team roster

The roster was announced on 4 July 2021.
Head coach: Stefano Lavarini
* 1 Lee So-young OS
* 3 Yeum Hye-seon S
* 4 Kim Hee-jin OH
* 7 An Hye-jin S
* 8 Park Eun-jin MB
* 9 Oh Ji-young L
* 10 Kim Yeon-koung (c) OS
* 11 Kim Su-ji MB
* 13 Park Jeong-ah OS
* 14 Yang Hyo-jin MB
* 16 Jeong Ji-yun OP
* 19 Pyo Seung-ju OS

##### Group play

| Pos | Teamvte | Pld | W | L | Pts | SW | SL | SR | SPW | SPL | SPR | Qualification |
| 1 | Brazil | 5 | 5 | 0 | 14 | 15 | 3 | 5.000 | 434 | 315 | 1.378 | Quarter-finals |
| 2 | Serbia | 5 | 4 | 1 | 12 | 13 | 3 | 4.333 | 381 | 313 | 1.217 | Quarter-finals |
| 3 | South Korea | 5 | 3 | 2 | 7 | 9 | 10 | 0.900 | 374 | 415 | 0.901 | Quarter-finals |
| 4 | Dominican Republic | 5 | 2 | 3 | 8 | 10 | 10 | 1.000 | 411 | 406 | 1.012 | Quarter-finals |
| 5 | Japan (H) | 5 | 1 | 4 | 4 | 6 | 12 | 0.500 | 378 | 395 | 0.957 | |
| 6 | Kenya | 5 | 0 | 5 | 0 | 0 | 15 | 0.000 | 242 | 376 | 0.644 | |

##### Bronze medal game
## Weightlifting

South Korea entered eight weightlifters into the Olympic competition. Rio 2016 Olympians Won Jeong-sik (men's 73 kg) and Yu Dong-ju (men's 96 kg), Jin Yun-seong (men's 109 kg), Ham Eun-ji (women's 55 kg), Kim Su-hyeon (women's 76 kg), and Lee Seon-mi (women's +87 kg) secured one of the top eight slots each in their respective weight divisions based on the IWF Absolute World Rankings, with Han Myeong-mok and Kang Yeoun-hee topping the field of weightlifters from the Asian zone in the men's 67 kg and women's 87 kg category, respectively, based on the IWF Absolute Continental Rankings. Won Jeong-sik withdrew from competition prior to the start of his event due to an ankle injury.

### Men

| Athlete | Event | Snatch | Snatch | Clean & Jerk | Clean & Jerk | Total | Rank |
| Athlete | Event | Result | Rank | Result | Rank | Total | Rank |
| Han Myeong-mok | −67 kg | 147 | 3 | 174 | 4 | 321 | 4 |
| Yu Dong-ju | −96 kg | 160 | 10 | 200 | 8 | 360 | 8 |
| Jin Yun-seong | −109 kg | 180 | 6 | 220 | 6 | 400 | 6 |

### Women

| Athlete | Event | Snatch | Snatch | Clean & Jerk | Clean & Jerk | Total | Rank |
| Athlete | Event | Result | Rank | Result | Rank | Total | Rank |
| Ham Eun-ji | −55 kg | 85 | 9 | 116 | 4 | 201 | 7 |
| Kim Su-hyeon | −76 kg | 106 | 5 | 140 | DNF | 106 | DNF |
| Kang Yeoun-hee | −87 kg | 103 | 10 | 128 | 9 | 231 | 9 |
| Lee Seon-mi | +87 kg | 125 | 3 | 152 | 4 | 277 | 4 |

## Wrestling

South Korea qualified two wrestlers for each of the following weight classes into the Olympic competition; all of whom progressed to the top two finals of the men's Greco-Roman wrestling (67 and 130 kg), respectively, at the 2021 Asian Qualification Tournament in Almaty, Kazakhstan.
Key:
* VT (ranking points: 5–0 or 0–5) – Victory by fall.
* VB (ranking points: 5–0 or 0–5) – Victory by injury (VF for forfeit, VA for withdrawal or disqualification)
* PP (ranking points: 3–1 or 1–3) – Decision by points – the loser with technical points.
* PO (ranking points: 3–0 or 0–3) – Decision by points – the loser without technical points.
* ST (ranking points: 4–0 or 0–4) – Great superiority – the loser without technical points and a margin of victory of at least 8 (Greco-Roman) or 10 (freestyle) points.
* SP (ranking points: 4–1 or 1–4) – Technical superiority – the loser with technical points and a margin of victory of at least 8 (Greco-Roman) or 10 (freestyle) points.

### Greco-Roman

| Athlete | Event | Qualification | Round of 16 | Quarterfinal | Semifinal | Repechage | Final / BM | Final / BM |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Ryu Han-su | Men's −67 kg | Merabet (ALG) W 4–0 $^{ST}$ | El-Sayed (EGY) L 1–3 $^{PP}$ | Did not advance | Did not advance | Did not advance | Did not advance | 9 |
| Kim Min-seok | Men's −130 kg | — | Mirzazadeh (IRI) L 0–3 $^{PO}$ | Did not advance | Did not advance | Did not advance | Did not advance | 14 |

## Politics

South Korean politicians took issue with a map of the torch relay on the Games' official website, which depicted the disputed Liancourt Rocks (territory claimed by Japan but governed by South Korea) as part of Japan. "South Korea, through the Japanese embassy in South Korea, has lodged a protest on the issue," Japan's then cabinet secretary Yoshihide Suga said, "Japan told the South Korean side that the protest is not acceptable given that Japan owns Takeshima and given Japan's position on the Sea of Japan."
The South Korean government also called for a ban of the Rising Sun Flag in the Olympic Games, due to being considered to be offensive as a consequence of its usage by the Imperial Japanese military during World War II. In September 2019, the South Korean parliamentary committee for sports asked the organisers of 2020 Summer Olympics in Tokyo to ban the Rising Sun Flag.
On 8 August 2021, the final day of the Tokyo 2020 Summer Olympics, the South Korean Olympic Committee announced, "The IOC has declared in a letter that the Rising Sun Flag violates the Olympic Charter. It will be banned at the Olympics." In response, the Tokyo Organising Committee of the Olympic Games announced on 9 August, "The announcement by the South Korean Olympic Committee is not true. When we contacted the IOC, we confirmed that the IOC will continue to respond to the issue on a case-by-case basis and will not impose a blanket ban. On the morning of 9 August, the IOC sent a letter to South Korea indicating that the use of the flag will be determined on a case-by-case basis."