The 1990 Campeonato Nacional, was the 58th season of top-flight football in Chile.
Colo-Colo won its seventeenth title.
[1] Deportes Concepción, as Liguilla winners, also qualified for the next Copa Libertadores .
Source[2] Deportes Concepción also qualified for the 1991 Copa Libertadores Everton and Deportes Antofagasta (after Naval was dissolved); will play in the 1991 Primera División