This is a list of Portuguese football transfers for the 2010 summer transfer window. The summer transfer window opened on 1 July and closed at midnight on 1 September. Only moves involving Portuguese Liga and Liga de Honra clubs are listed. Players without a club may join one at any time, either during or in between transfer windows.
The 2010–11 Primeira Liga was the 77th season of the Primeira Liga, the top professional league for Portuguese association football clubs. It began on 15 August 2010 and ended on 14 May 2011. A total of 16 teams contested the league, 14 of which already took part in the previous season and two of which were promoted from the Liga de Honra. Benfica were the defending champions but finished runners-up to Porto, who won their 25th league title in the club's first-ever unbeaten season. Porto's forward Hulk was the top scorer with 23 goals.
The 2014–15 season was Sport Lisboa e Benfica's 111th season in existence and the club's 81st consecutive season in the top flight of Portuguese football.
Iago Azevedo dos Santos, best known as Iago Santos, is a Brazilian professional footballer who plays for Al-Shabab as a defender.
The 2018–19 season was Futebol Clube do Porto's 109th competitive season and 85th consecutive season in the top flight of Portuguese football. It began on 4 August 2018 and concluded on 25 May 2019.
The 2019–20 season was Futebol Clube do Porto's 110th competitive season and 86th consecutive season in the top flight of Portuguese football. It started with the UEFA Champions League third qualifying round on 7 August 2019 and concluded with the Taça de Portugal final against Benfica on 1 August 2020.
The 2020–21 season was Futebol Clube do Porto's 111th competitive season and 87th consecutive season in the top flight of Portuguese football. In addition to the domestic league, Porto participated in this season's editions of the Taça de Portugal, the Taça da Liga and the UEFA Champions League. The season started on 19 September 2020 and concluded on 19 May 2021.