Brazil participated in the 2010 Summer Youth Olympics in Singapore.
France competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from 14 August to 26 August 2010.
Germany participated in the 2010 Summer Youth Olympics in Singapore. The German squad consisted of 70 athletes competing in 20 sports: aquatics (swimming), archery, athletics, badminton, basketball, boxing, canoeing, fencing, gymnastics, judo, modern pentathlon, rowing, sailing, shooting, table tennis, taekwondo, tennis, triathlon, weightlifting and wrestling.
Great Britain participated in the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore.
Hungary competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from 14 August to 26 August 2010.
Italy competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from 14 August to 26 August 2010.
Japan competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from 14 August to 26 August 2010.
Thailand participated in the 2010 Summer Youth Olympics in Singapore.
The United States participated in the 2010 Summer Youth Olympics in Singapore.
Australia competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from 14 August to 26 August 2010.
Badminton competition at the 2010 Summer Youth Olympics was held from August 15 to August 19, 2010 at the Singapore Indoor Stadium.
Finland participated in the 2010 Summer Youth Olympics in Singapore.
Indonesia participated in the 2010 Summer Youth Olympics in Singapore with 14 athletes. The team competed in a total of seven sports: archery, badminton, cycling, swimming, taekwondo, tennis, and weightlifting. According to the head of the national contingent, Ade Lukman, athlete training was conducted by individual managers of each sport. All athletes were gathered in Jakarta on 6 August for a cultural training session.
Malaysia participated in the 2010 Summer Youth Olympics in Singapore. The Malaysian team consisted of 13 athletes, seven male and six female, who competed in six sports: aquatics, athletics, badminton, rhythmic gymnastics, sailing and weightlifting. The chef-de-mission of the contingent was former national swimmer Alex Lim, who competed in the 2004 Summer Olympics in Athens.
Girls' triathlon was part of the triathlon at the 2010 Summer Youth Olympics programme. The event consisted of 750 metres (0.47 mi) swimming, 20 kilometres (12 mi) cycling, and 5 kilometres (3.1 mi) running. It was held on 15 August 2010 at East Coast Park. The park is Singapore's most popular public beach and park; it is the venue of the Osim Singapore Triathlon, an Olympic triathlon event which began in 2002. Competitors swam in the open seas of the Singapore Strait and raced on the park's 12-kilometre (7.5 mi) track. U.S. triathlon coach Keith Dickson said the course favored strong swimmers and fast runners. Athletes were faced with environmental challenges such as strong sea currents and tropical heat and humidity. As the first medal event of the Singapore Games, the winner of this triathlon received the first gold medal in the Youth Olympic Games.
South Africa competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from 14 August to 26 August 2010. The nation was represented by the South Africa Olympic Committee, which sent a total of sixty-two athletes to compete in thirteen sports. The flagbearer at the opening ceremony for the nation was fencer Wanda Matshaya.
Ukraine participated in the 2010 Summer Youth Olympics in Singapore.
Cuba competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from 14 August to 26 August 2010.
Chile participated in the 2010 Summer Youth Olympics in Singapore..
Seychelles competed at the 2010 Summer Youth Olympics, the inaugural Youth Olympic Games, held in Singapore from August 14 to August 26, 2010. The nation was represented by the Seychelles Olympic and Commonwealth Games Association, which sent a total of four athletes to compete in four sports. The flagbearer at the opening ceremony for the nation was badminton player Kervin Ghislain. Seychelles' Olympic team was one of the 106 that did not win a single medal at the Games.
