The Judo competition at the 1980 Summer Olympics was the first time that the medal count was not dominated by Japan, as the country joined the boycott of the games because of the 1979 Soviet invasion of Afghanistan. Medals were awarded in to male judoka 7 weight classes and in the open competition, two more weight classes than in 1976.
South Korea's government became a democracy under the pressure of organising the Olympics.
After boycotts of the Olympics in 1976, 1980 and 1984, the Games were again boycotted, but only by four nations: North Korea, Cuba, Ethiopia and Nicaragua.
Table tennis is introduced at the Olympics, with China and the host nation both winning two titles.