The 2003–04 football season in Portuguese football was dominated by FC Porto, which was later involved in the corruption scandal Apito Dourado in relation to this season. Although Porto failed to win the Portuguese Double because of Benfica in the Taça de Portugal final, the club won the UEFA Champions League, becoming the first Portuguese team to do so in the current form of the competition.
Domestic competitions
SuperLiga
Champion: FC Porto (UEFA Champions League group stage)
Because both teams in the final had already qualified for the UEFA Champions League, the UEFA Cup spot usually allocated to the winner of the Cup went to CS Marítimo, who finished sixth in the SuperLiga.
The Portuguese participants in this edition of the UEFA Cup were: Benfica, Sporting and União de Leiria.
Benfica entered the first round of the UEFA Cup. They were the most successful Portuguese team in the competition, reaching the fourth round, where they lost to an Italian team, Inter Milan. Prior to this, they beat La Louvière, Molde and Rosenborg.
Sporting beat Malmö in the first round, but were surprised in the following round by Turkish team Gençlerbirligi, who beat Sporting in their own stadium by 3-0.
União de Leiria entered in the final preliminary round, where they beat Coleraine, but they were knocked out in the first round by Molde (who were subsequently beaten by Benfica in the following round).
UEFA Intertoto Cup
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UEFA SuperCup
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