| 1988–89 season | |||
|---|---|---|---|
| Manager | Arrigo Sacchi | ||
| Serie A | 3rd | ||
| Coppa Italia | Group stage | ||
| European Cup | Winners | ||
| Supercoppa Italiana | Winners | ||
| Top goalscorer | Marco van Basten (19) | ||
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A.C. Milan won the European Cup thanks to a 4–0 victory against Steaua București, with Dutch duo Ruud Gullit and Marco van Basten scoring twice each. It did not defend its Serie A title however, finishing 3rd in the standings. Milan also won the first Supercoppa Italiana, beating Sampdoria in the inaugural contest.