Which country led the boycott of the 1980 Summer Olympics in Moscow?

The United States led the boycott of the 1980 Summer Olympics in Moscow.

President Jimmy Carter announced in January 1980 that the United States would not send a team to Moscow after the Soviet Union invaded Afghanistan in December 1979. The decision followed a deadline demanding Soviet withdrawal.

More than 60 countries ultimately stayed away or did not compete fully, although the exact total depends on how participation is counted. Some athletes from boycotting nations competed under other arrangements, while several countries attended but did not take part in the opening ceremony.

The boycott was answered by a Soviet-led boycott of the 1984 Los Angeles Games. These political actions sharply reduced participation at two consecutive Summer Olympics.