Original Warrior football shirt FC Porto 2014/15

The 2014–15 FC Porto season was the club's 105th competitive season and the 81st consecutive season in the top flight of Portuguese football. For the first time since the 1988–89 season, and the third during the presidency of Jorge Nuno Pinto da Costa, Porto did not win any official competition.

The pre-season began on 3 July 2014 and featured eight preparation matches: four in Portugal (including a presentation match on 27 July against Saint-Étienne) and four abroad, in the Netherlands, Belgium and England. Porto started the official season on 15 August 2014 with a 2–0 home win against Marítimo for the 2014–15 Primeira Liga. For the first time in nine seasons, the Supertaça Cândido de Oliveira was not Porto's season-opening match, as the club failed to qualify for the 36th edition by not winning the 2013–14 Primeira Liga title or being present in the final of the 2013–14 Taça de Portugal (as Benfica made the double).

Porto also competed in other domestic competitions, such as the Taça de Portugal and the Taça da Liga. Together with the other Primeira Liga teams, they entered the 2014–15 Taça de Portugal in the third round, but were eliminated by Sporting CP after a 3–1 home loss. Beginning their 2014–15 Taça da Liga campaign in the third round, Porto topped their group and qualified for the semi-finals, where they were barred from a third final appearance after losing 2–1 away to Marítimo.

In UEFA competitions, Porto participated in the 2014–15 UEFA Champions League. They reached the group stage for the 19th time after eliminating French side Lille in the play-off round. Porto topped their group and secured qualification for the knockout phase. In the round of 16, they eliminated Basel with an aggregate score of 5–1. In doing so, Porto booked a place in the quarter-finals for the first time since 2008–09, where they faced Bayern Munich. After beating the Germans 3–1 for the first leg, in what was Porto's first-ever home win over Bayern Munich, the team lost the second leg 6–1 and were eliminated with a 7–4 aggregate score. This defeat was their worst ever defeat in UEFA competitions, together with a 6–1 away defeat against AEK Athens in the 1978–79 European Cup.