South Yemen competed as the Yemen Democratic Republic at the 1988 Summer Olympics in Seoul, South Korea. It was the only time that the nation would compete at the Olympic Games. After unification with North Yemen, the nation would later return as Yemen at the 1992 Summer Olympics.
Chad has sent athletes to every Summer Olympic Games held between 1964 and 1972 and from 1984 to 2020, Chad never won an Olympic medal. No athletes from Chad have competed in any Winter Olympic Games.
The Central African Republic has sent athletes to every Summer Olympic Games held between 1984 and 2020, as well as its first appearance in 1968. The country, however, has yet to win an Olympic medal. No athletes from the Central African Republic have competed in any Winter Olympic Games.
Ethiopia first participated at the Olympic Games in 1956, and has sent athletes to compete in every Summer Olympic Games since then, except for the 1976, 1984 and 1988 Games. Ethiopia also participated in the Winter Olympic Games for the first time at the 2006 Games in Turin.
Aruba first competed at the Olympic Games in 1988, and has participated in each Summer Olympic Games since then. Aruba has yet to win any Olympic medals.
Czechoslovakia first participated at the Olympic Games in 1918, after having competed as Bohemia from 1900 to 1912. The nation sent athletes to compete in every Summer Olympic Games since then, except for the 1984 Games when they were part of the Soviet-led boycott of the 1984 Summer Olympics. Czechoslovakia has participated in every Winter Olympic Games since the inaugural Games of 1924.
Taiwan, officially the Republic of China (ROC), competes as "Chinese Taipei" (TPE) at the Olympic Games since 1984. Athletes compete under the Chinese Taipei Olympic flag instead of the flag of the Republic of China; for any medal ceremony, the National Flag Anthem of the Republic of China is played instead of the National Anthem of the Republic of China.
The Democratic People's Republic of Korea first participated at the Olympic Games in 1964. The National Olympic Committee for North Korea is the Olympic Committee of the Democratic People's Republic of Korea, and was created in 1953 and recognized in 1957.
Puerto Rico first participated at the Olympic Games in 1948, and has sent athletes to compete in every Summer Olympic Games since then. Puerto Rico has also participated in the Winter Olympic Games since 1984, but did not participate in the Games of 2006, 2010, and 2014.
The Republic of Moldova first participated at the Olympic Games as an independent nation in 1994, and has sent athletes to compete in every Olympics since then.
Malaysia first participated at the Olympic Games in 1956, and has sent athletes to compete in every Summer Olympic Games since then, except when Malaysia participated in the American-led boycott of the 1980 Summer Olympics. Malaysia made their debut at the Winter Olympic Games in 2018.
North Macedonia first competed as an independent nation at the Olympic Games at the 1996 Summer Olympics, then as the "former Yugoslav Republic of Macedonia", and has participated in every Summer Olympic Games and Winter Olympic Games since then. Previously, until 1988, Macedonian athletes competed for Yugoslavia, and in 1992 as Independent Olympic Participants. The provisional appellation of "former Yugoslav Republic of Macedonia" was used until 2018, in the context of the Macedonia naming dispute.
Zambia participated for the first time at the Olympic Games under the current name in 1968, and has since taken part in every Summer Olympic Games with the exception of 1976. Previously, it competed as Northern Rhodesia in 1964 and under the banner of Rhodesia in 1960. Zambia has never sent athletes to compete in the Winter Olympic Games.
Tanzania first participated at the Olympic Games in 1964, and has sent athletes to compete in every Summer Olympic Games except for the boycotted 1976 Games and has never participated in the Winter Olympic Games.
The Republic of the Congo, competing as Congo, first participated at the Olympic Games in 1964, and has sent athletes to compete in most Summer Olympic Games since then. Congo missed the 1968 Games and boycotted the 1976 Games along with most other African nations. Congo has never participated in the Winter Olympic Games.
The Democratic Republic of the Congo first participated at the Olympic Games in 1968, when it was known as Congo Kinshasa. The nation's next Olympic appearance was sixteen years later in 1984, when it was known as Zaire. The nation has sent athletes to compete in every Summer Olympic Games since then, but has never participated in the Winter Olympic Games. By the 2000 Games, the nation was once again designated Democratic Republic of the Congo.
Seychelles first participated at the Olympic Games in 1980, and has sent athletes to compete in most Summer Olympic Games since then, missing only the 1988 Games when Seychelles did not respond to the invitation sent by the IOC. The nation has never participated in the Winter Olympic Games.
Equatorial Guinea first participated at the Olympic Games in 1984, and has sent athletes to compete in every Summer Olympic Games since then. The nation has never participated in the Winter Olympic Games.
The Solomon Islands first participated at the Olympic Games in 1984, and has sent athletes to compete in every Games of the Olympiad since then. The nation has never won an Olympic medal and never participated in the Winter Olympic Games.
The National Olympic Committee for Vanuatu was created in 1987 and recognized by the International Olympic Committee that same year. Vanuatu first participated at the Olympic Games in 1988 and has sent athletes to compete in every Summer Olympic Games since then. The nation has never participated in the Winter Olympic Games.
North Yemen (1984–1988)
South Yemen (1988)
