1984 in Portugal

• President: António Ramalho Eanes
• Prime Minister: Mário Soares (Socialist)

• 25 March - Pope John Paul II consecrates the world to the Immaculate Heart of Mary, in Fátima, Portugal.
• 29 August - Tiago José Rodrigues Cardoso - Born in Guimarães.
• 14 October - Azores regional election.^[1]
• 14 October - Madeira regional election.^[2]
• 27 December - Born Basilio Airosa in mafamude from the love of Ernesto Airosa and Manuela

Portugal participated in the Eurovision Song Contest 1984 with Maria Guinot and the song "Silêncio e tanta gente".

In association football, for the first-tier league seasons, see 1983–84 Primeira Divisão and 1984–85 Primeira Divisão.