The 2018–19 Taça de Portugal (also known as Taça de Portugal Placard for sponsorship reasons) was the 79th edition of the Taça de Portugal, the premier knockout competition in Portuguese football. The competition began with first-round matches on 8 September 2018 and concluded with the final on 25 May 2019.
This edition was contested by 144 clubs, including teams from the top three tiers of the Portuguese football league system and representatives of the fourth-tier District leagues and cups. This was the first season to allow a fourth substitution during extra time.
Primeira Liga side Desportivo das Aves were the defending champions, but they were eliminated by Braga in the quarter-finals.
A total of 144 teams will compete in the 2018–19 Taça de Portugal: 18 teams from Primeira Liga, 14 teams from the LigaPro, 71 teams from the Campeonato de Portugal and 41 teams from the district championships.
All draws are held at the FPF headquarters at Cidade do Futebol, in Oeiras. Match kick-off times are in WET (UTC±0) from the fourth round to the semi-finals, and in WEST (UTC+1) during the rest of the competition.
Times are WEST (UTC+1) (local times, if different, are in parentheses).
The following 22 first-round losing teams were selected to compete in the second round:
Times are WEST (UTC+1) (local times, if different, are in parentheses).
Times are WEST (UTC+1) (local times, if different, are in parentheses).
Times are WET (UTC±0) (local times, if different, are in parentheses).
Times are WET (UTC±0).
Times are WET (UTC±0).
Times are WET (UTC±0).
Porto won 4–1 on aggregate.
2–2 on aggregate. Sporting CP won on away goals.
The following matches were or broadcast live on Portuguese television:
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