The 2004–05 season saw Benfica clinch the SuperLiga Galp Energia title after almost 11 years without the championship.
The SuperLiga had one of the most competitive years, with both Braga and Boavista fighting for the title for a reasonable amount of time, closing the gap on the Big Three of Benfica, Porto and Sporting CP.
In the League of Honour, Paços de Ferreira won the title and alongside newcomers Naval 1º de Maio and former competitors Estrela da Amadora secured their place in the first level of Portuguese football for 2005–06.
Early in the season, Porto lost the 2003 UEFA Super Cup to 2002–03 Champions League victors Milan.
Meanwhile, the Portugal national football team managed to secure a comfortable position that would prove decisive in the qualification for the FIFA World Cup 2006.