The 1984 AFC Asian Cup was the 8th edition of the men's AFC Asian Cup, a quadrennial international football tournament organised by the Asian Football Confederation (AFC). The finals were hosted by Singapore between 1 December and 16 December 1984. The field of ten teams was split into two groups of five. Saudi Arabia won their first title, beating China in the final 2–0.

The AFC Asian Cup is the primary association football competition contested by the senior men's national teams of the members of the Asian Football Confederation (AFC), determining the continental champion of Asia. It is the second oldest continental football championship in the world after Copa América. The winning team becomes the champion of Asia and until 2015 qualified for the FIFA Confederations Cup.