Mauritania competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. The country's participation at Athens marked its sixth appearance in the Summer Olympics since its debut in the 1984 Summer Olympics. The delegation included two track and field athletes, Youba Hmeida and Aminata Kamissoko, who were both selected by wildcards after both failed to meet either the "A" or "B" qualifying standards. Hmeida was selected as the flag bearer for the opening ceremony. Neither of the Mauritanians progressed beyond the heats.
Palau had its debut at the Summer Olympic Games in 2000 in Sydney. Palau has not yet participated in any Winter Olympic Games.
Palau competed at the 2008 Summer Olympics in Beijing, China. Palau's Olympic delegation was led by Frank Kyota, the President of the Palau National Olympic Committee, and consisted of five athletes, three team officials and four coaches. This was an increase from the nation's two previous appearances at the Summer Olympic Games; four athletes had been sent to both the Sydney and Athens Games. Palau's Olympic team was one of the 117 that won no medals at the Games.
Palau participated in the 2010 Summer Youth Olympics in Singapore.
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.
At the 2012 Summer Olympics Parade of Nations of the 2012 London Olympics, athletes and officials from each participating country paraded into the Olympic Stadium preceded by their national flag to the sound of iconic British modern music. Each flag bearer was chosen by each nation's National Olympic Committee or by the delegation of athletes.
The Oceanic island nation of Palau competed at the 2012 Summer Olympics in London from 27 July to 12 August 2012. This was the nation's fourth consecutive appearance at the Olympics.
Rodman Teltull is a Palauan sprinter who competes in the 100 metres. He was flag bearer for Palau at the 2012 Summer Olympics opening ceremony. He took part in the 100 metres at the 2012 Summer Olympics in London, but did not progress past the preliminaries, though he set a career-best time of 11.06.
Valeria Rapatamor “Valerie” Pedro was a weightlifter who competed internationally for Palau. She was the first woman to represent Palau at the Olympics.
Palau competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's fifth consecutive appearance at the Summer Olympics.
