The 2005–06 Primeira Liga was the 72nd edition of top flight of Portuguese football. It started on 19 August 2005 with a match between Sporting CP and Belenenses and ended on 7 May 2006. The league was contested by 18 clubs with Benfica as defending champions.
Vitória de Guimarães
Vitória de Setúbal
|Goals scored||681 (2.23 per match)|
|Best Player||Ricardo Quaresma|
|Top goalscorer||Albert Meyong (17 goals)|
|Biggest home win||Braga 5–0 Rio Ave|
(17 February 2006)
|Biggest away win||Maritimo 0–6 Vitória de Setúbal|
(20 November 2005)
|Highest scoring||União de Leiria 5–2 Rio Ave|
(7 May 2006) 
Porto and Sporting CP were both qualified for the 2005–06 UEFA Champions League group stage, and Benfica qualified for the UEFA Champions League qualifying round; Braga, Nacional and Vitória de Setúbal qualified for the UEFA Cup 2006–07; in opposite, with the league dropping to 16 teams, four teams were relegated to the Liga de Honra; Gil Vicente, Rio Ave, Vitória de Guimarães and Penafiel. Meyong was the top scorer with 17 goals.
The season's first goal was scored by Rogério, who scored a 39th-minute goal for Sporting against Belenenses. The first yellow card of the season was given to Sporting's Fábio Rochemback in the opening game of the season, and the first red card was given to Benfica's João Pereira in his club's away draw against Académica de Coimbra.
Promotion and relegationEdit
Teams relegated to Liga de HonraEdit
Moreirense, Beira-Mar and Estoril were relegated to the Liga de Honra following their final classification in 2004–05 season.
Teams promoted from Liga de HonraEdit
The other three teams were replaced by Estrela da Amadora, Paços de Ferreira and Naval 1º de Maio from the Liga de Honra.
|Pos||Team||Pld||W||D||L||GF||GA||GD||Pts||Qualification or relegation|
|1||Porto (C)||34||24||7||3||54||16||+38||79||Qualification to Champions League group stage|
|3||Benfica||34||20||7||7||51||29||+22||67||Qualification to Champions League third qualifying round|
|4||Braga||34||17||7||10||38||22||+16||58||Qualification to UEFA Cup first round|
|7||União de Leiria||34||13||8||13||44||42||+2||47|
|8||Vitória de Setúbal||34||14||4||16||28||33||−5||46||Qualification to UEFA Cup first round[a]|
|9||Estrela da Amadora||34||12||9||13||31||33||−2||45|
|11||Paços de Ferreira||34||11||9||14||38||49||−11||42|
|12||Gil Vicente (R)||34||11||7||16||37||42||−5||40||Relegation to Liga de Honra[b]|
|14||Naval 1º de Maio||34||11||6||17||35||48||−13||39|
|16||Rio Ave (R)||34||8||10||16||34||53||−19||34||Relegation to Liga de Honra|
|17||Vitória de Guimarães (R)||34||8||10||16||28||41||−13||34|
Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) goal difference; 5) number of goals scored
(C) Champion; (R) Relegated
Top goal scorersEdit
|6||Joeano||13||Académica de Coimbra|
|7||Marek Saganowski||12||Vitória de Guimarães|