The Judo competition at the 1984 Summer Olympics continued the seven weight classes first used at the 1980 Games. With the open division, there were eight competitions. Japan returned to the top of the medal count, after boycotting the Moscow games. Because of the Soviet-led boycott of the Los Angeles games, several traditionally strong judo countries, including Cuba and the Soviet Union, did not participate. The Judo competition was held at California State University, Los Angeles.
Israel has competed at the Olympic Games as a nation since 1952. Its National Olympic Committee was formed in 1933, during the British Mandate of Palestine. Israel has sent a team to each Summer Olympic Games since 1952, and to each Winter Olympic Games since 1994. The country became a member of the European Olympic Committees (EOC) in 1994.
Albania first participated at the Summer Olympic Games in 1972. They missed the next four games, three of them for political reasons due to the 1980 Summer Olympics boycott, 1984 Summer Olympics boycott and 1988 boycotts, but returned for the Barcelona 1992 Summer Olympics. They have appeared in all games since then. They made their Winter Olympic Games debut in 2006. Albania normally competes in events that include swimming, athletics, weightlifting, shooting, and wrestling. The country has not yet won any Olympic medal. Along with Andorra, Bosnia and Herzegovina, Malta and Monaco, Albania is one of five current European participants that have never won an Olympic medal. They have been represented by the Albanian National Olympic Committee since 1972.
American Samoa sent a team to the 2008 Summer Olympics in Beijing, China. The U.S. territory selected four athletes to compete in three sports: swimming, athletics and judo. The dependency's participation in Beijing marked its seventh participation in any Olympic game since its debut at the 1988 Summer Olympics in Seoul, and its sixth participation at any Summer Olympic games. Of the four American Samoan athletes who participated in Beijing, all four were first-time Olympians and born outside American Samoa and none of the four advanced past the qualification or preliminary rounds of their events. More women participated in the 2008 American Samoan Olympic delegation than in any one delegation in its Olympic history. Judoka Silulu A'etonu was the territory's flagbearer at the ceremonies.
Haiti sent a delegation to compete in the 2008 Summer Olympics held in Beijing, People's Republic of China, from August 8 to August 24, 2008. Its participation in Beijing marked its seventh consecutive appearance at the summer Olympics and its fourteenth appearance overall, with its first being at the 1900 Summer Olympics in Paris. The Haitian Olympic team included seven athletes participating in track and field, boxing, and judo. More women participated for Haiti in 2008 than at any single Olympic games prior. Although Pierre and Dorival advanced to quarterfinals in their events, there were no Haitian medalists in Beijing. Brutus carried his country's flag at the ceremonies.
Paula Belén Pareto is an Argentine retired judoka and physician. She was the flag bearer for her country at the closing ceremony of the 2016 Summer Olympics held in Rio de Janeiro, Brazil. She competed at the 2020 Summer Olympics.
Marie Muller is a Luxembourger judoka.
Mayra Aguiar da Silva is a Brazilian judoka. She was a bronze medallist in three consecutive Olympics, 2012, 2016 and 2020. She is also three-time world champion. She is the first Brazilian woman to win three Olympic medals in an individual sport.
Idalys Ortiz Bocourt is a Cuban judoka. She competed in the over 78 kg division at the 2008, 2012 and 2016 Olympics and won a medal on each occasion. She won the silver medal in the women's +78 kg event at the 2020 Summer Olympics held in Tokyo, Japan.
Yuri Alvear Orejuela is a Colombian judoka, three times World Champion in her division.
Majlinda Kelmendi is a Kosovan-Albanian former judoka and judo coach.
Cape Verde competed at the 2012 Summer Olympics which were held in London, United Kingdom from 27 July to 12 August 2012. The country's participation at London marked its fifth appearance in the Summer Olympics since its debut in 1996. The delegation included Ruben Sança, a long-distance runner; Lidiane Lopes, a sprinter; and Adysângela Moniz, a judoka. Moniz and Sança were also selected as the flag bearers for the opening and closing ceremonies respectively. Of the three Cape Verdean athletes, only Moniz progressed further than the first round.
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.
Djibouti competed at the 2012 Summer Olympics in London, from July 27 to August 12, 2012. This was the nation's seventh appearance at the Olympics.
Linouse Desravine is a Haitian judoka who competes in the women's 52 kg category. At the 2012 Summer Olympics, she was Haiti's flag bearer, but she was defeated in the first round of her event.
María Altagarcia García Cáceres is a Dominican Republican judoka who competes in the women's 52 kg category. She became the first Dominican judoka to win a world championship medal, with a bronze at the 2006 Junior Championships.
Gemma Howell is a British retired judoka from Stafford, England, who competed at the Olympic Games.
Moira de Villiers is a South African-born New Zealand judoka. She competed in the 70 kg event at the 2012 Summer Olympics losing in the first round. She competed in the women's 70 kg event at the 2014 Commonwealth Games where she won the silver medal.
Maryna Pryshchepa is a Ukrainian judoka.
Natalie Powell is a Welsh judoka. She competed for Wales in the women's 78 kg event at the 2014 Commonwealth Games where she won a gold medal.
