Judo was first included in the Summer Olympic Games at the 1964 Games in Tokyo, Japan. After not being included in 1968, judo has been an Olympic sport in each Olympiad since then. Only male judoka participated until the 1988 Summer Olympics, when women participated as a demonstration sport. Women judoka were first awarded medals at the 1992 Summer Olympics.
The middleweight class was a judo event held as part of the Judo at the 1964 Summer Olympics programme. The weight class was the second-lightest contested, and allowed judokas of up to eighty kilograms. The competition was held on Wednesday, October 21, 1964.
The heavyweight class was a judo event held as part of the Judo at the 1964 Summer Olympics programme. The weight class was the heaviest contested, and allowed judokas over eighty kilograms. The competition was held on Thursday, October 22, 1964.
The open category was a judo event held as part of the Judo at the 1964 Summer Olympics programme. The weight class allowed judokas of any weight. The competition was held on Friday, October 23, 1964.
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.
Tajikistan competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's sixth consecutive appearance at the Summer Olympics in the post-Soviet era.
Turkmenistan competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's sixth consecutive appearance at the Summer Olympics in the post-Soviet era.
Austria competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Olympic Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's twenty-eighth appearance at the Summer Olympics.
Turkey 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. Since the nation's official debut in 1908, Turkish athletes have appeared in every edition of the Summer Olympic Games, except the 1920 Summer Olympics in Antwerp, the 1932 Summer Olympics in Los Angeles at the period of worldwide Great Depression, and the 1980 Summer Olympics in Moscow because of its support for the United States-led boycott.
Portugal competed at the 2020 Summer Olympics in Tokyo, from 23 July to 8 August 2021. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed because of the COVID-19 pandemic. Portuguese athletes have appeared in every edition of the Summer Olympic Games since the nation's debut in 1912.
Guatemala 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, because of the COVID-19 pandemic. It was the nation's fifteenth appearance at the Summer Olympics since its debut in 1952, despite failing to register any athletes in three other editions.
Cuba 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, because of the COVID-19 pandemic. The Cuban delegation was their smallest since 1964, which coincidentally was also in Tokyo. It was the nation's twenty-first appearance at the Summer Olympics. Cuba improved on its 2016 result, by winning 7 gold and 15 total medals after 5 and 11 in Rio.
Algeria competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place in the summer of 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. Since the nation's debut in 1964, Algerian athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1976 Summer Olympics in Montreal because of the African boycott. Unlike Algeria's previous successes in the Summer Olympics, they failed to secure a single medal.
Uruguay 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. Since the nation's official debut in 1920, Uruguayan athletes have appeared in every edition of the Summer Olympic Games, with the exception of the 1980 Summer Olympics in Moscow, because of its Uruguay's support to the United States-led boycott. Uruguay left the Olympics with no medals earned.
The Dominican Republic 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, because of the COVID-19 pandemic. It was the nation's fifteenth consecutive appearance at the Summer Olympics. The Dominican Republic left the Summer Olympics with 3 silver medals and 2 bronze medals with moderate success, but not able to secure a single gold medal in any of the events.
Tunisia 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. Since the nation's official debut in 1960, Tunisian athletes have appeared in every edition of the Summer Olympic Games, except the 1980 Summer Olympics in Moscow because of the nation's partial support for the US-led boycott.
Morocco competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place during the summer of 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's fifteenth appearance at the Summer Olympics.
Libya 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, because of the COVID-19 pandemic. It was the nation's twelfth appearance at the Summer Olympics since its debut at the 1964 Summer Olympics in Tokyo; seven of them were represented by the Libyan athletes under the name Libyan Arab Jamahiriya.
Jordan competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place during the summer of 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. It was the nation's 11th consecutive appearance at the Summer Olympics.
Sudan competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place during the summer of 2020, the Games were rescheduled for 23 July to 8 August 2021, due to the COVID-19 pandemic. This was the nation's twelfth appearance at the Summer Olympics.
