The following are the association football events of the year 1990 throughout the world.
- March 28 – Sweden's Bo Johansson makes his debut as the manager of Iceland, defeating Luxembourg 2–1.
- March 31 – NAC Breda sacks manager Hans Verèl.
- May 16 – Juventus win the two-legged 1990 UEFA Cup Final, beating fellow Italian side Fiorentina 3–1 on aggregate. This was the first European competition final between two Italian clubs.
- May 17 – Manchester United beats Crystal Palace 1–0 in a replay to claim the FA Cup. The only goal is scored by Lee Martin.
- May 23 – Milan beats Benfica 1–0 in the 1990 European Cup Final. The only goal is scored by Frank Rijkaard.
- July 8 – West Germany wins the 1990 FIFA World Cup in Rome, Italy, defeating defending reigning champions Argentina 1–0 in the final.
- September 8 – Franz Beckenbauer is appointed manager at Olympique de Marseille.
- September 12 – Euro 1992 qualifying: there are great surprises at Landskrona, Sweden, where the Faroe Islands, in their first competitive international match, defeat Austria 1–0. It is the "Waterloo Day" in Austrian football, and national happiness day for Faroes.
- September 12 – East Germany plays its last ever international match, defeating Belgium 2–0 in Brussels.
- September 19 – Dutch team Vitesse Arnhem makes its European debut with a win (1-0) in Northern Ireland against Derry City F.C. in the first round of the UEFA Cup. The only goal is scored by striker Huub Loeffen in the 18th minute.
- October 10 – Copa Libertadores 1990 is won by Olimpia Asunción after defeating Barcelona Sporting Club on an aggregate score of 3–1.
- October 17 – Croatia host their first match in the modern period after gaining independence from Yugoslavia, a friendly against United States in Zagreb. Croatia wins 2–1, and the first goal for the Croats in the modern era is scored by Aljoša Asanović.
- November 5 – Manager Howard Kendall is fired by Manchester City and succeeded by Peter Reid.
- December 9 – AC Milan once again wins the Intercontinental Cup in Tokyo, Japan, this time by defeating Paraguay's Olimpia Asunción (3–0). Frank Rijkaard scores twice for the Italians.
Winners of national championships 
South America 
International Tournaments 
National team results 
South America 
- January 5 — Leroy Fer, Dutch footballer
- January 20 — Tales, Brazilian footballer
- February 5 — Dalton, Brazilian footballer
- February 12 — Hamilton Chasi, Ecuadorian footballer
- February 15 — Fidel Martínez, Ecuadorian footballer
- February 25 — Rafael Romo, Venezuelan footballer
- March 9 — Christian La Torre, Peruvian footballer
- March 19 — Jonathan Urretavizcaya, Uruguayan footballer
- April 27 — Luís Pedro, Dutch-Angolan footballer
- May 2 — Daniel Sanchez, Peruvian footballer
- May 19 — Victor Ibarbo, Colombian footballer
- May 24 — Anderson Cueto, Peruvian footballer
- May 24 — Ricardo Chará, Colombian footballer
- March 27 — Jefferson Pinto, Ecuadorian footballer
- June 24 — Kelvin Leerdam, Dutch footballer
- July 15 — Michael Castro, Ecuadorian footballer
- August 8 — Abel Hernández, Uruguayan footballer
- August 11 — Lerin Duarte, Dutch footballer
- August 13 — Cristian Nazarith, Colombian footballer
- August 23 — Reimond Manco, Peruvian footballer
- September 8 — Néstor Duarte, Peruvian footballer
- September 14 — Douglas Costa, Brazilian footballer
- September 14 — Santiago García, Uruguayan footballer
- September 16 — José Salomón Rondón, Venezuelan footballer
- September 18 — Mauricio Arroyo, Colombian footballer
- September 19 — Ernesto Salazar, Peruvian footballer
- September 19 — Marco Pérez, Colombian footballer
- October 27 — Deison Méndez, Ecuadorian footballer
- November 11 — Georginio Wijnaldum, Dutch footballer
- December 7 — Rafael Uiterloo, Dutch footballer
- December 12 — Pablo Camacho, Venezuelan footballer
- December 27 — Luis Trujillo, Peruvian footballer