Japan at the 2010 Summer Youth Olympics
Japan competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from 14 August to 26 August 2010.
Medalists
| Medal | Name | Sport | Event | Date |
| Triathlon | Girls' Triathlon | 15 Aug | ||
| Wrestling | Girls' Freestyle 46kg | 16 Aug | ||
| Wrestling | Boys' Freestyle 54kg | 17 Aug | ||
| Gymnastics | Boys' individual all-around | 18 Aug | ||
| Judo | Girls' 63kg | 22 Aug | ||
| Table tennis | Boys' Singles | 23 Aug | ||
| Judo | Boys' 100kg | 23 Aug | ||
Ayuka Tanioka | Table tennis | Mixed Team | 26 Aug | |
| Athletics | Boys' 100m | 21 Aug | ||
| Gymnastics | Boys' Rings | 21 Aug | ||
| Athletics | Boys' 200m | 22 Aug | ||
| Athletics | Girls' 3000m | 22 Aug | ||
| Athletics | Boys' Long Jump | 22 Aug | ||
| Gymnastics | Boys' Trampoline | 20 Aug | ||
| Gymnastics | Girls' Trampoline | 20 Aug | ||
| Swimming | Girls' 200m Breaststroke | 20 Aug |
Archery
BoysGirls
Mixed Team
Athletics
Boys
;Track and Road Events;Field Events
Girls
;Track and Road Events;Field Events
Badminton
;Boys;Girls
Basketball
GirlsCycling
;Cross Country| Athlete | Event | Time | Rank | Points |
| Idomu Yamamoto | Boys’ Cross Country | 1:05:14 | 19 | 72 |
| Manami Iwade | Girls’ Cross Country | 54:19 | 11 | 32 |
;Time Trial
| Athlete | Event | Time | Rank | Points |
| Koji Nagase | Boys’ Time Trial | 4:14.07 | 15 | 28 |
| Manami Iwade | Girls’ Time Trial | 3:42.29 | 20 | 40 |
;BMX
;Road Race
;Overall
Gymnastics
Artistic Gymnastics
;Boys| Athlete | Event | Score | Rank |
| Yuya Kamoto | Boys' Floor | 13.050 | 8 |
| Yuya Kamoto | Boys' Pommel Horse | 13.325 | 6 |
| Yuya Kamoto | Boys' Rings | 14.200 | |
| Yuya Kamoto | Boys' Parallel Bars | 13.750 | 6 |
| Yuya Kamoto | Boys' Horizontal Bar | 14.075 | 4 |
;Girls
| Athlete | Event | Score | Rank |
| Natsumi Sasada | Girls' Vault | 13.662 | 4 |
Rhythmic Gymnastics
;TeamTrampoline
Judo
;Individual| Athlete | Event | Round 1 | Round 2 | Round 3 | Semifinals | Final | Rank |
| Athlete | Event | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Opposition Result | Rank |
| Ryosuke Igarashi | Boys' −100 kg | BYE | W 021–000 | W 100–000 | W 002–000 | ||
| Miku Tashiro | Girls' −63 kg | BYE | W 100–000 | W 101–000 | W 100–001 | W 100–000 |
;Team
Rowing
Sailing
;WindsurfingSwimming
BoysGirls
Mixed
Table tennis
;Individual;Team
Tennis
;Singles;Doubles
Triathlon
Yuka Sato won the first gold medal of the Youth Olympic Games.;Girls
| Triathlete | Event | Swimming | Transit 1 | Cycling | Transit 2 | Running | Total time | Rank |
| Yuka Sato | Individual | 9:32 | 0:35 | 32:10 | 0:27 | 18:05 | 1:00:49.69 |
;Men's
| Athlete | Event | Swim | Trans 1 | Bike | Trans 2 | Run | Total | Rank |
| Yuki Kubono | Individual | 9:21 | 0:35 | 30:26 | 0:25 | 18:39 | 59:26.04 | 26 |
;Mixed
| Athlete | Event | Total Times per Athlete '' | Total Group Time | Rank |
' | Mixed Team Relay Asia 2 | 22:55 20:43 23:54 20:08 | 1:27:40.62 | 13 |
| ' | Mixed Team Relay Asia 1 | 20:16 20:06 22:19 20:39 | 1:23:20.88 | 8 |
Volleyball
Weightlifting
| Athlete | Event | Snatch | Clean & Jerk | Total | Rank |
| Miku Shichinohe | Girls' +63kg | 80 | 93 | 173 | 12 |