Grenada at the 1988 Summer Olympics

Saint Kitts and Nevis took part in the 2004 Summer Olympics, which were held in Athens, Greece, from August 13 to 29. The country's participation at Athens marked its third appearance at the Summer Olympics. The delegation included two track and field athletes: Kim Collins in the men's 100 meters, and Tiandra Ponteen in the women's 400 meters.

Saint Lucia competed at the 2004 Summer Olympics in Athens, Greece from 13 to 29 August 2004. Saint Lucia's athletes marched out first at the parade of nations at the Opening Ceremony as the first country in order of the Greek alphabet, and because hosts Greece marched last instead of their usual position at the head of the parade.

Saint Lucia competed at the 2000 Summer Olympics which were held in Sydney, Australia from 13 September to 1 October. Saint Lucia sent five athletes to the 2000 Summer Olympics, Ron Promesse, Dominic Johnson, Vernetta Lesforis, Jamie Peterkin, and Sherri Henry. While none of the athletes form Saint Lucia won an Olympic medal at the 2000 Summer Olympics, Jamie Promesse placed first in his heat for the men's 50-metre freestyle.

Saint Vincent and the Grenadines competed at the 2000 Summer Olympics in Sydney, Australia with two track and field athletes and two swimmers.

Australia competed at the 1948 Summer Olympics in London, England. 75 competitors, 66 men and 9 women, took part in 52 events in 11 sports. Australian athletes have competed in every Summer Olympic Games.

Saint Kitts and Nevis took part in the 2000 Summer Olympics, which were held in Sydney, Australia, from September 13 to October 1. The country's participation marked its second appearance at the Summer Olympics since its debut at the 1996 Summer Olympics in Atlanta. The delegation included two track and field athletes: Kim Collins and Valma Bass.

Argentina competed at the 1948 Summer Olympics in London, England. 199 competitors, 188 men and 11 women, took part in 101 events in 16 sports. It was the country's largest delegation until the 2016 Summer Olympics. With 3 golds, 3 silvers, and a bronze, it tied Argentina's performance in 1928, and remains the last time the country achieved 7 medals in an edition of the Olympics.

Djibouti took part in the 1996 Summer Olympics, which were held in Atlanta, United States from 19 July to 4 August. The country's participation marked its fourth appearance in the Summer Olympics since its debut at the 1984 Summer Games in Los Angeles, United States. The delegation from Djibouti included five athletes, three in athletics and two in sailing. The three athletes for athletics were Ali Ibrahim, Omar Moussa, and Hussein Ahmed Salah while Robleh Ali Adou and Mohamed Youssef represented the country for sailing.

Djibouti took part in the 1988 Summer Olympics which were held in Seoul, South Korea from September 17 to October 2. The country's participation marked its second appearance in the Summer Olympics since its debut at the 1984 Summer games in Los Angeles, United States. The delegation from Djibouti included six athletes, five in athletics and one in sailing. The five athletes for athletics were Hoche Yaya Aden, Ismael Hassan, Talal Omar Abdillahi, Hussein Ahmed Salah, and Omar Moussa while Robleh Ali Adou represented the nation in sailing. Ahmed Salah won the nation's first Olympic medal, which is a bronze at the Men's Marathon event.

Saint Vincent and the Grenadines competed at the 1996 Summer Olympics in Atlanta, United States with eight track and field athletes.

Great Britain, represented by the British Olympic Association (BOA), competed as the host nation for the 1948 Summer Olympics in London. It was the second time that the United Kingdom had hosted the Summer Olympic Games, equalling the record of France and the United States to that point. British athletes have competed in every Summer Olympic Games. 404 competitors, 335 men and 68 women, took part in 139 events in 21 sports.

Grenada competed in the 2008 Summer Olympics, held in Beijing, People's Republic of China from 8 to 24 August 2008. Nine athletes represented the country, eight track and field athletes and one boxer. Of the eight track and field competitors, five were women, and three were men. Although none of the athletes would win a medal, runners Allison George and Neisha Bernard-Thomas progressed past the qualification rounds, and participated on behalf of Grenada in the quarterfinals of their events. Grenada's Beijing delegation was their biggest at nine athletes, and marked the seventh consecutive appearance of Grenada at the Olympics.

Saint Vincent and the Grenadines sent a delegation to compete at the 2008 Summer Olympics in Beijing, China. The year's team included two athletes engaged in track and field events, and was accompanied by the team coach, manager, and chaperone. Saint Vincent and the Grenadines' appearance in Beijing marked its sixth consecutive Olympic appearance since its 1988 debut in Seoul, South Korea, and its smallest delegation to date. Alexander bore the flag of Saint Vincent and the Grenadines in the opening ceremony and neither athlete medaled in their events or advanced to later rounds.

Niger sent five athletes, their second largest contingent ever, equalling the most sports in which they have participated. to compete at the 2008 Summer Olympics in Beijing, China. It was Niger's 10th Olympics; their only medalist has been Issaka Dabore, in boxing, at the 1972 games.

Egypt competed at the 2012 Summer Olympics in London, from 27 July to 12 August 2012, sending one of its largest delegations ever. A total of 110 Egyptian athletes participated in 83 events across 20 sports, with more women taking part than ever before. The nation's flagbearer in the opening ceremonies was Hesham Mesbah, a judoka who was Egypt's only medalist at the 2008 Summer Olympics. Egypt won two medals during the course of the Games: Alaaeldin Abouelkassem earned silver in the men's foil, becoming the first competitor from an African nation to win a fencing medal, while Karam Gaber captured silver in the men's 84 kg Greco-Roman wrestling event. Two Egyptian weightlifters were awarded medals retroactively, after higher-ranked competitors were disqualified for doping: Abeer Abdelrahman took silver in the women's 75 kg event, while Tarek Yehia, received bronze in the men's 85 kg event. Among other achievements, Mostafa Mansour was the nation's first competitor in sprint canoeing while fencer Shaimaa El-Gammal became the first Egyptian female to appear in four editions of the Olympics.

Grenada competed at the 2012 Summer Olympics in London, United Kingdom from 27 July to 12 August 2012. This was the nation's eighth consecutive appearance at the Olympics. Few weeks before the Games, Grenadian athletes trained at Broadbridge Heath Leisure Centre near Horsham, West Sussex.

Saint Lucia 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.

Chad competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012. This marked the nation's eleventh appearance at the Summer Olympics since its debut in the 1964 Summer Olympics. The Chadian delegation included track and field athlete Hinikissia Ndikert and judoka Carine Ngarlemdana. Ngarlemdana was the flag bearer for the opening ceremony and Ndikert was the flag bearer for the closing ceremony. Neither of Chad's athletes progressed beyond the first round of their events. Chad was one of only two countries to have a female-only team at the 2012 games.

Grenada competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's ninth consecutive appearance at the Summer Olympics.

Chad competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. The country's participation in Rio de Janeiro marked its twelfth appearance at the Summer Olympics since its debut in 1964. The delegation included two track and field athletes: Bachir Mahamat in the men's 400 metres and Bibiro Ali Taher in the women's 5000 metres. Both athletes participated at the Games through wild card places since they did not meet the required standards to qualify. Neither athletes progressed past their heats.