# South Korea at the 2018 Summer Youth Olympics

South Korea participated at the 2018 Summer Youth Olympics in Buenos Aires, Argentina from 6 October to 18 October 2018.

## Medalists

| Medal | Name | Sport | Event | Date |
| Gold | Cho Won-hee | Taekwondo | Boys' 63 kg | 9 Oct |
| Silver | Hyun Jun | Fencing | Boys' sabre | 7 Oct |
| Silver | Kang Mi-reu | Taekwondo | Girls' 44 kg | 7 Oct |
| Silver | Kim Kang-min | Taekwondo | Boys' 55 kg | 8 Oct |
| Silver | Sung Yun-ho | Shooting | Boys' 10 meter air pistol | 10 Oct |
| Bronze | Im Seong-bin | Taekwondo | Boys' 48 kg | 7 Oct |
| Bronze | Kim Ju-hee | Judo | Girls' 63 kg | 8 Oct |
| Bronze | Lee Ye-ji | Taekwondo | Girls' 49 kg | 8 Oct |
| Bronze | Lee Ju-eun | Fencing | Girls' sabre | 9 Oct |
| Bronze | Kim Ye-ri | Dancesport | B-Girls | 11 Oct |
| Bronze | Wang Hee-song | Swimming | Girls' 200 m breaststroke | 12 Oct |
| Bronze | Son Ye-ryeong | Archery | Girls' individual | 16 Oct |

## Competitors

| Sport | Boys | Girls | Total |
| Archery | 1 | 1 | 2 |
| Athletics | 1 | 0 | 1 |
| Dancesport | 0 | 1 | 1 |
| Fencing | 1 | 2 | 3 |
| Golf | 1 | 0 | 1 |
| Gymnastics | 1 | 2 | 3 |
| Judo | 0 | 1 | 1 |
| Roller speed skating | 1 | 0 | 1 |
| Shooting | 1 | 0 | 1 |
| Sport climbing | 2 | 0 | 2 |
| Swimming | 2 | 2 | 4 |
| Table tennis | 1 | 1 | 2 |
| Taekwondo | 3 | 2 | 5 |
| Triathlon | 0 | 1 | 1 |
| Total | 15 | 13 | 28 |

## Archery

South Korea qualified two archers based on its performance at the 2017 World Archery Youth Championships.

### Individual

| Athlete | Event | Ranking round | Ranking round | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Rank |
| Athlete | Event | Score | Seed | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Song In-jun | Boys' Individual | 691 | 1 | Tura (SMR) W 6–2 | Benítez (PAR) W 7–1 | Roos (BEL) L 1–7 | did not advance | did not advance | 7 |
| Son Ye-ryeong | Girls' Individual | 663 | 4 | Kang (PRK) W 6–0 | Naumova (UKR) W 6–0 | Chang (TPE) W 6–0 | Zhang (CHN) L 4–6 | Vázquez Cadena (MEX) W 7–3 | |

### Team

| Athletes | Event | Ranking round | Ranking round | Round of 32 | Round of 16 | Quarterfinals | Semifinals | Final / BM | Rank |
| Athletes | Event | Score | Seed | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Song In-jun (KOR) Mst Radia Akther Shapla (BAN) | Mixed Team | 1271 | 31 | Vázquez Cadena (MEX) Mustafin (KAZ) L 2–6 | did not advance | did not advance | did not advance | did not advance | 17 |
| Son Ye-ryeong (KOR) Dan Thompson (GBR) | Mixed Team | 1293 | 25 | van der Winkel (NED) Cheremiskin (RUS) L 2–6 | did not advance | did not advance | did not advance | did not advance | 17 |

## Dancesport

South Korea qualified one dancer based on its performance at the 2018 World Youth Breaking Championship.
* B-Girls - Yell

## Fencing

South Korea qualified four athletes based on its performance at the 2018 Cadet World Championship, but only 3 participated.
| Athlete | Event | Pool Round | Seed | Round of 16 | Quarterfinals | Semifinals | Final / BM | Rank |
| Athlete | Event | Opposition Score | Seed | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Hyun Jun | Boys' Sabre | Pool 2  Vidovszky (USA) W 5-4 El Araby (EGY) W 5-1 Coly (SEN) W 5-0 Mahbas (IRQ) W 5-0 Rabb (HUN) L 2-5 Shaker (IRI) W 5-2 Heathcock (GER) W 5-4 | 2 | Coly (SEN) W DNF | Kato (JPN) W 15-12 | Vidovszky (USA) W 15-14 | Rabb (HUN) L 13-15 | |
* Boys' Foil - Kwon Jungsung
* Girls' Épée - Lim Taehee
* Girls' Sabre - Lee Jueun

## Gymnastics
### Artistic

South Korea qualified two gymnasts based on its performance at the 2018 Asian Junior Championship.
* Boys' artistic individual all-around - 1 quota
* Girls' artistic individual all-around - 1 quota

### Rhythmic

South Korea qualified one gymnast based on its performance at the 2018 Asian Junior Championship.
* Girls' rhythmic individual all-around - 1 quota

## Golf
### Individual

| Athlete | Event | Round 1 | Round 1 | Round 2 | Round 2 | Round 2 | Round 3 | Round 3 | Round 3 | Total | Total | Total |
| Athlete | Event | Score | Rank | Score | Total | Rank | Score | Total | Rank | Score | Par | Rank |
| Park Sangha | Boys' Individual | 73 (+3) | 12 | 77 (+7) | 140 | 23 | 73 (+3) | 223 | 12 | 223 | +13 | 16 |

### Team

| Athletes | Event | Round 1 (Fourball) | Round 1 (Fourball) | Round 2 (Foursome) | Round 2 (Foursome) | Round 3 (Individual Stroke) | Round 3 (Individual Stroke) | Round 3 (Individual Stroke) | Round 3 (Individual Stroke) | Total | Total | Total |
| Athletes | Event | Score | Rank | Score | Rank | Girl | Boy | Total | Rank | Score | Par | Rank |
| Ribka Vania (INA) Park Sangha (KOR) | Mixed team | 66 (-4) | 16 | 69 (-1) | 2 | 75 | 73 | 148 (+8) | 16 | 283 | +3 | 8 |

## Judo

| Athlete | Event | Round of 16 | Quarterfinals | Semifinals | Repechage1 | Repechage2 | Repechage3 | Final/BM match | Final/BM match |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Kim Ju-hee | Girls' −63 kg | Alessia Corrao (BEL) L 01-11 | did not advance | did not advance | Bye | Marin Visser (NED) W 01–00s2 | Itzel Pecha (MEX) W 10–00 | Nikol Pencue (COL) W 01–00s1 | |

### Team

| Team | Event | Round 1 | Round 2 | Semifinals | Final | Rank |
| Team | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Seoul Mohammed Al-Mishri (LBA) Alex Barto (SVK) Sairy Colón (PUR) María Giménez (VEN) Yuri Israelyan (ARM) Kim Ju-hee (KOR) Omaria Ramírez (DOM) Wu Xiao-zhang (TPE) | Mixed Team | Los Angeles L 3–5 | did not advance | did not advance | did not advance | 9 |

## Modern pentathlon

South Korea qualified two pentathletes based on its performance at the Asian/Oceanian Youth Olympic Games Qualifier. South Korea qualified a second male based on its performance at the 2018 Youth A World Championship. The nation must choose between the two boys.
* Boys' Individual - Shin Hyoseop or Moon Juseong
* Girls' Individual - Yoon Yangji
Eventually no South Korean modern pentathletes competed.

## Roller speed skating

South Korea qualified two roller skaters based on its performance at the 2018 Roller Speed Skating World Championship.
* Boys' combined speed event - Cheon Jongji
* Girls' combined speed event - Lee Yerim

## Shooting

South Korea qualified one sport shooter based on its performance at the 2017 Asian Championships.
* Boys' 10m Air Pistol - 1 quota

### Individual

| Athlete | Event | Qualification | Qualification | Final | Final |
| Athlete | Event | Points | Rank | Points | Rank |
| Sung Yun-ho | Boys' 10 m air pistol | 569-15 | 6 | 236.7 | |

### Mixed

| Athlete | Event | Qualification | Qualification | Round of 16 | Quarterfinal | Semifinal | Final | Final |
| Athlete | Event | Points | Rank | Opposition Score | Opposition Score | Opposition Score | Opposition Score | Rank |
| Doua Chalghoum (TUN) Sung Yun-ho (KOR) | Mixed 10 metre air pistol | 720-7 | 20 | did not advance | did not advance | did not advance | did not advance | did not advance |

## Sport climbing

South Korea qualified one sport climber based on its performance at the 2017 World Youth Sport Climbing Championships.
* Boys' combined - 1 quota (Seongmin Eog)

## Table tennis

South Korea qualified one table tennis player based on its performance at the Asian Continental Qualifier. South Korea also qualified a female table tennis player based on its performance at the Road to Buenos Aires (Asia) series.
* Boys' singles - Cho Daeseong
* Girls' singles - Choi Haeeun

## Taekwondo
### Boys

| Athlete | Event | Round of 16 | Quarterfinals | Semifinals | Final | Final |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Im Seong-bin | 48 kg | Bye | Zurab Kintsurashvili (GEO) W 30-11 | Ulugbek Rashitov (UZB) L 10-21 | did not advance | |
| Kim Kang-min | 55 kg | Daniel Goichman (ISR) W 33-11 | Georgios Ioannou (GRE) W 23-15 | Zaid Abdul Kareem (JOR) W 31-16 | Georgii Popov (RUS) L 26-33 | |
| Cho Won-hee | 63 kg | Bye | Ramiro Ravachino (ARG) W 41-21 | Javad Aghayev (AZE) W 15-13 | Nareupong Thepsen (THA) W 21-16 | |

### Girls

| Athlete | Event | Round of 16 | Quarterfinals | Semifinals | Final | Final |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Kang Mi-reu | 44 kg | Bye | Mahla Momenzadeh (IRI) W 15-14 | Lena Stojković (CRO) W 16-13 | Polina Shcherbakova (RUS) L 6-12 | |
| Lee Ye-ji | 49 kg | Bye | Aaliyah Powell (GBR) W 21-14 | Anastasija Zolotic (USA) L 11-21 | did not advance | |

## Triathlon

South Korea qualified one athlete based on its performance at the 2018 Asian Youth Olympic Games Qualifier.

### Individual

| Athlete | Event | Swim (750m) | Trans 1 | Bike (20 km) | Trans 2 | Run (5 km) | Total Time | Rank |
| Lee Jung-won | Girls | 10:06 | 0:40 | 30:15 | 0:38 | 21:06 | 1:02:45 | 19 |

### Relay

| Athlete | Event | Total Times per Athlete (Swim 250m, Bike 6.6 km, Run 1.8 km) | Total Group Time | Rank |
| Asia 1 Lee Jung-won (KOR) Teppei Tokuyama (JPN) Emma Ada Middleditch (SGP) Daniil Zubtsov (KAZ) | Mixed Relay | 22:57 (8) 21:44 (9) 24:01 (7) 23:15 (10) | 1:31:57 | 10 |