1990 was a year:
- 5 May – The Eurovision Song Contest 1990 is held in Zagreb. The song Insieme: 1992, performed by Toto Cutugno for Italy, wins the contest.
- 8 July: West Germany wins the FIFA World Cup by defeating Argentina, 1–0, in the final game at the Olympic Stadium in Rome, Italy.
- 3 October: The German Democratic Republic joins the Federal Republic of Germany.
- 23 December – The majority of the People of Slovenia votes in a referendum for independence from Yugoslavia.