On behalf of the Cook Islands the Cook Islands Sports and National Olympic Committee sent a team to the 2008 Summer Olympics in Beijing, China, marking its sixth consecutive appearance at the Olympics since its debut in the 1988 Summer Olympics in Seoul, South Korea. The country sent four athletes to the Games across three sports and four distinct events. No athlete of the Cook Islander delegation progressed past the first rounds in their events and did not go on to win medals. Pera was the nation's flag bearer at the ceremonies.
The Marshall Islands took part in the 2008 Summer Olympics, which were held in Beijing, China from 8 to 24 August 2008. The 2008 Summer Olympics were the Marshall Islands' first appearance at the Olympics. The delegation included five athletes, two in athletics, two in swimming, and one in taekwondo. The Marshall Islands failed to win an Olympic medal at these Games.
The Federated States of Micronesia sent a team of five athletes to compete at the 2008 Summer Olympics in Beijing, China. The appearance of the delegation marked the third appearance by a Micronesian team at the Olympics since its debut at the 2000 Summer Olympics in Sydney, Australia. Three male athletes and two female athletes comprised the Olympic team. None of the track or swimming athletes advanced past the qualification round, and Minginfel placed second to last in his event. There has yet to be a medalist from the Federated States of Micronesia. Minginfel held the Micronesian flag in the opening ceremony.
The Solomon Islands send a team to compete at the 2008 Summer Olympics in Beijing, China. The country's delegation consisted of three athletes competing in two sports across three distinct events; Francis Manioru and Pauline Kwalea represented the Solomon Islands in track, while Wendy Hale competed in weightlifting. The arrival of the Solomon Islander delegation in Beijing marked its seventh appearance since its debut at the 1984 Summer Olympics in Los Angeles. The track athletes did not advance past the first rounds in their events. There were no medalists from the Solomon Islander athletes in these Games. Wendy Hale was the Solomon Islands' flagbearer during the Games' opening ceremony.
Tonga competed at the 2008 Summer Olympics, that celebrated in Beijing, China, from August 8 to August 24, 2008. Tonga was represented by the Tonga Sports Association and National Olympic Committee, and was one of 117 nations that won no medals at the Games. Tonga was represented by three athletes competing in two sports–Aisea Tohi and Ana Po'uhila in track and field events, and Maamaloa Lolohea in weightlifting. The delegation's appearance at the Olympics marked its seventh consecutive appearance at the Olympics since its debut at the 1984 Summer Olympics in Los Angeles. The flag bearer for Tonga in Beijing was field athlete Ana Po'uhila.
Tuvalu competed at the 2008 Summer Olympics in Beijing, China, from 8 to 24 August 2008. This was the nation's first ever appearance in an Olympic Game. The delegation included two track and field athletes and one weightlifter. Okilani Tinilau and Asenate Manoa participated in athletics while Logona Esau participated in the weightlifting sport. Both track and field athletes achieved national records. Logona Esau led the Tuvaluan squad as the nation's flag bearer in the parade of nations.
Gambia took part in the 2008 Summer Olympics, held in Beijing, China from 8 to 24 August 2008. It was Gambia's seventh appearance in the summer Olympics since its debut in 1984. The Gambia team included three athletes; runners Suwaibou Sanneh and Fatou Tiyana as well as boxer Badou Jack. Jack, a middleweight at his first Olympics, was selected as flag bearer for both the opening and closing ceremonies. None of the Gambia athletes progressed further than the qualifying heats.
Puerto Rico competed in the 2008 Summer Olympics which was held in Beijing, People's Republic of China from August 8 to August 24, 2008. The American territory with a population of four million people qualified 22 athletes in eight different sports. The appearance of the Puerto Rican delegation at the Beijing Olympics marked the commonwealth's sixteenth consecutive appearance at the Summer Olympics, and its twenty-second appearance at any Olympic Games, since its debut at the 1948 Summer Olympics in London, England. Of its competitors participating in events that involve progression by heats, six athletes advanced at least one round in their events, and two advanced at least two rounds, with Asunción Ocasio almost medaling bronze in taekwondo. However, there were no Puerto Rican medalists at the Beijing Olympics. McWilliams Arroyo, a boxer, bore Puerto Rico's flag at the ceremonies.
The United States Virgin Islands competed in the 2008 Summer Olympics, which were held in Beijing, the People's Republic of China from August 8 to August 24, 2008. The appearance of its 23-person delegation marked its fifteenth appearance at the Olympic games, and its tenth appearance at the Summer Olympic games. In total, seven athletes participated on behalf of the Virgin Islands in Beijing. Of those, John Jackson and Tabarie Henry progressed to a post-preliminary event, and Henry reached semifinals in his own. There were no Virgin Islander medalists at the Beijing Olympics.
Malta competed at the 2008 Summer Olympics in Beijing, China from 8 to 24 August 2008. The country's participation at Beijing marked its fourteenth appearance at a Summer Olympics since its début at the 1928 Summer Olympics. The delegation sent by the Malta Olympic Committee consisted of six athletes: sprinters Nikolai Portelli and Charlene Attard, light-middleweight judoka Marcon Bezzina, double trap shooter William Chetcuti and short-distance swimmers Ryan Gambin and Madeleine Scerri.
The British Virgin Islands took part in the 2008 Summer Olympics which were held in Beijing, China from 8 to 24 August 2008. The dependency's participation at Beijing marked its seventh consecutive appearance in the summer Olympics since its debut in 1984, and its eighth Olympic appearance ever. The British Virgin Islander delegation included two athletes in 2008 participating in two distinct events in one sport: discus thrower Eric Matthias and sprinter Tahesia Harrigan. Of the athletes, Harrigan was the flagbearer and the first female Olympian to participate on behalf of the British Virgin Islands in its entire history. Overall, Harrigan advanced to quarterfinals in her event, although neither athlete medaled.
Comoros took part in the 2008 Summer Olympics, held in Beijing, China from 8 to 24 August 2008. It was Comoros's fourth appearance in the summer Olympics since its debut in 1996. The Comoros team included three athletes: runners Mhadjou Youssouf and Feta Ahamada, and swimmer Mohamed Attoumane. Ahamada, a 100 metres sprinter, was the flag bearer for the opening ceremony, the first woman to be given the honour. None of the Comoros athletes progressed further than the qualifying heats.
Barbados sent a delegation to compete at the 2008 Summer Olympics in Beijing, China. The island nation made its tenth appearance as an independent nation upon its arrival in Beijing. Eight athletes across three sports and ten events represented Barbados, marking the smallest delegation in its history up to the Beijing Games. Its runners and swimmers advanced past the first rounds in their events in four of their nine events, although none advanced to their events' final rounds or medaled. The nation's flagbearer during the Beijing Games was swimmer Bradley Ally.
The Cayman Islands sent a delegation to compete at the 2008 Summer Olympics in Beijing, China. The delegation included fifteen people; of the delegation, four athletes participated under the Caymanian flag. In the track and field events was Ronald Forbes, who also served as the Cayman Islands' flag-bearer during the Opening Ceremony and reached quarterfinals in the 110m hurdles, and Cydonie Mothersille, who reached finals and ranked eighth in the 200m dash. Brothers Shaune and Brett Fraser, both swimmers, participated in the 100 and 200m freestyle and in the 200m backstroke, respectively. The Cayman Islands' appearance at the Beijing Olympics marked its ninth appearance since its debut at the 1976 Summer Olympics in Montreal. The Cayman Islands, up to and including Beijing, have yet to medal.
Suriname sent a delegation of four people to compete at the 2008 Summer Olympics in Beijing, China: two athletes (Jurgen Themen and Kirsten Nieuwendam and two swimmers who participated in four distinct events. The appearance of Suriname at Beijing marked its tenth Olympic appearance, which included every Olympic games since the 1968 Summer Olympics in Mexico City and excluded the 1980 Summer Olympics in Moscow. Its four athletes did not advance past the first round in each of their events. The Surinamese flag bearer in Beijing was not an athlete, but Anthony Nesty, the only medalist in Surinamese history and the nation's Olympic swimming coach.
The Marshall Islands has competed in five summer Olympiads. It has yet to compete at a Winter Olympic Games. The Marshall Islands Olympic debut was at the 2008 Summer Olympics in Beijing, China. The highest number of Marshallese athletes participating in a Summer Games is five in the 2008 games in Beijing. No athlete from the Marshall Islands has ever won a medal at the Olympics.
The Marshall Islands marked its second consecutive Olympiad, at the 2012 Summer Olympics in London, from July 27 to August 12, 2012. The Olympian delegation included two men and two women, one male and one female athlete in athletics and one male and one female athlete in swimming. Middle-distance runner Haley Nemra was honored as the national flag bearer at the opening ceremony. The Marshall Islands continued their streak of bringing home no medals.
Jared J. Heine is an American-Marshallese swimmer, who specialized in backstroke events. He acquired a dual citizenship to participate internationally for the Marshall Islands at the 2008 Summer Olympics, placing himself among the top 45 swimmers in the 100 m backstroke.
The Marshall Islands competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's third consecutive appearance at the Summer Olympics.
The Marshall Islands 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, due to the COVID-19 pandemic. It was the nation's fourth appearance at the Summer Olympics since its debut in 2008. The delegation consisted of two athletes, one man and one women, competing in two events in swimming. Swimmer Phillip Kinono competed in the men's 50 metre freestyle. Colleen Furgeson, a returning competitor from the 2016 Rio Olympics competed in the women's 100 metre freestyle. For the first time, in an effort to promote gender equality, two flagbearers, one male and one female were allowed at the Olympics. Furgeson and Kinono lead the Marshall Islands squad as the flagbearers in the opening ceremony. The Marshall Islands, however, has yet to win its first ever Olympic medal.
Marshall Islands 
