← → Events in the year 1973 in Portugal.

Portugal participated in the Eurovision Song Contest 1973, with Fernando Tordo and the song "Tourada".

In association football, for the first-tier league seasons, see 1972–73 Primeira Divisão and 1973–72 Primeira Divisão; for the Taça de Portugal seasons, see 1972–73 Taça de Portugal and 1973–74 Taça de Portugal.