Tajikistan competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004.
Bulgaria was represented by 72 athletes at the 2008 Summer Olympics, held in Beijing, People's Republic of China.
Turkey sent a team to compete at the 2008 Summer Olympics in Beijing, China. In total, 67 Turkish athletes went to Beijing, including 19 women.
Albania sent a team to compete at the 2008 Summer Olympics in Beijing, China which was organised by the National Olympic Committee of Albania.
Armenia competed in the 2008 Summer Olympics in Beijing, China. A team of 25 athletes, consisting of 9 wrestlers, 6 weightlifters, 4 boxers, 2 athletes, 2 judokas, 1 sport shooter and 1 swimmer was selected. With a total of six bronze medals, Armenia won more medals than in all previous Olympic Games combined.
Colombia competed at the 2008 Summer Olympics. The country sent 68 athletes to compete in 15 sports, making this Colombia's largest ever delegation to the Olympics.
Romania competed in the 2008 Summer Olympics, held in Beijing, China from August 8 to August 24, 2008. Romania intended to send 104 competitors to Beijing, although the delegation was reduced to 102 when two Romanian athletes were suspended for doping before the start of the Olympics. The Romanian delegation for Beijing was the smallest Romanian Olympic delegation since the 1989 Revolution. Romanians competed in 16 sports: athletics, archery, handball, gymnastics, wrestling, swimming, diving, weightlifting, fencing, table tennis, shooting, tennis, judo, boxing, kayak-canoeing, and rowing.
Mongolia competed in the 2008 Summer Olympics, held in Beijing, China, from August 8 to August 24, 2008. 29 athletes represented the country and competed in seven events. The Beijing Olympics has been Mongolia's most successful games ever, winning two gold and two silver medals, exceeding the 1980 Moscow Olympics where the nation won two silver and two bronze medals.
Nigeria competed in the 2008 Summer Olympics which were held in Beijing, People's Republic of China from August 8 to August 24, 2008.
Tunisia competed in the 2008 Summer Olympics held in Beijing, People's Republic of China from August 8 to August 24, 2008. The country was represented by 28 athletes competing in 10 sports.
Uzbekistan competed in the 2008 Summer Olympics held in Beijing, People's Republic of China from August 8 to August 24, 2008, with a team of 58 athletes.
Slovakia competed at the 2008 Summer Olympics in Beijing, People's Republic of China. The team includes 57 athletes in several sports.
Peru competed in the 2008 Summer Olympics which was held in Beijing, People's Republic of China from August 8 to August 24, 2008. The country was represented by at least twelve athletes, who competed in the fields of athletics, badminton, swimming, taekwondo, shooting, wrestling, judo and fencing.
El Salvador competed at the 2008 Summer Olympics in Beijing, China, from 8 to 24 August 2008. This was the nation's ninth appearance at the Olympics.
Georgia competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was a list of results of all athletes who qualified for the Olympics and were nominated by the Georgian National Olympic Committee. A total of 35 athletes, 29 men and 6 women, competed in 11 sports, tying the record for the most athletes with Beijing. Among the sports played by the athletes, Georgia marked its Olympic debut in tennis.
Mongolia competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's twelfth appearance at the Olympics, except the 1984 Summer Olympics in Los Angeles, because of its partial support to the Soviet boycott.
Ecuador competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's twelfth consecutive appearance at the Olympics. It had first competed at the 1924 Summer Olympics in Paris.
Tajikistan competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012. This was the nation's fifth consecutive appearance at the Olympics. The National Olympic Committee of the Republic of Tajikistan sent the nation's largest delegation to the Games. A total of 16 athletes, 13 men and 3 women, competed in 7 sports. Six of these athletes had competed in Beijing, including judoka Rasul Boqiev and freestyle wrestler Yusup Abdusalomov, who both won Tajikistan's first ever Olympic medals.
Armenia competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's fifth consecutive appearance at the Olympics in the post-Soviet era.
Guinea-Bissau competed at the 2016 Summer Olympics in Rio de Janeiro, from August 5 to 21, 2016. It was the nation's sixth consecutive appearance at the Summer Olympics.
Russian Empire (1900–1912)
Soviet Union (1952–1988)
Unified Team (1992)
