The 1968 AFC Asian Cup was the 4th edition of the men's AFC Asian Cup, a quadrennial international football tournament organised by the Asian Football Confederation (AFC). The finals were held in Iran between 10 and 19 May 1968, with five teams competing in a round-robin format with no final for what would be the last time. It was also the first tournament with 90-minute games, after 80-minute games in the first three editions.

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.