When did the Soviet Union last compete at the Summer Olympics?

The Soviet Union (USSR) competed, for the last time before its dissolution, at the 1988 Summer Olympics in Seoul. 481 competitors, 319 men and 162 women, took part in 221 events in 27 sports. Athletes from 12 of the ex-Soviet republics would compete as the Unified Team at the 1992 Summer Olympics, and each nation would field independent teams in subsequent Games.

The 1988 Summer Olympics, officially known as the Games of the XXIV Olympiad were an international multi-sport event celebrated from 17 September to 2 October 1988 in Seoul, South Korea. They were the second summer Olympic Games to be held in Asia and the first since the 1964 Summer Olympics held in Tokyo, Japan.

These were the last Olympic Games for two of the world's "dominating" sport powers, the Soviet Union and East Germany, as both ceased to exist before the next Olympic Games.