This is a list of Portuguese football transfers for the summer of 2023. The summer transfer window will open 1 July and close at midnight on 31 August. Players may be bought before the transfer windows opens, but may only join their new club on 1 July. Only moves involving Primeira Liga clubs are listed. Additionally, players without a club may join a club at any time.
Jorge da Costa Pires is a Portuguese former professional footballer who played as a striker.
Arsénio Martins Lafuente Nunes, known simply as Arsénio, is a Portuguese professional footballer who plays for U.D. Leiria as a winger.
The 2016–17 season is Chaves' fourteenth season in the top flight of Portuguese football. This marked Chaves' return to the Portuguese top tier, after a seventeen-year absence.
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 Boavista F.C. season was the club's 118th season in existence and the club's seventh consecutive season in the top flight of Portuguese football. In addition to the domestic league, Boavista participated in this season's edition of the Taça de Portugal, being eliminated in the fourth round. The club did not qualify for the condensed version of the Taça da Liga this season. The season covered the period from July 2020 to 30 June 2021.
The 2021–22 season was the 128th season in the existence of FC Porto and the club's 88th 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, the UEFA Champions League and the UEFA Europa League.
The 2022–23 season is the 72nd season in the history of F.C. Paços de Ferreira and their fourth consecutive season in the top flight. The club are participating in the Primeira Liga, the Taça de Portugal, and the Taça da Liga.
The 2022–23 season was the 84th in the history of F.C. Vizela and their second consecutive season in the top flight. The club participated in the Primeira Liga, the Taça de Portugal, and the Taça da Liga.
The 2023–24 Sport Lisboa e Benfica season was the club's 120th season in existence and its 90th consecutive season in the top flight of Portuguese football. Domestically, Benfica played in the Primeira Liga as defending champions, and reached the semi-finals of the Taça da Liga and Taça de Portugal. In Europe, Benfica played in the UEFA Champions League group stage before reaching the UEFA Europa League quarter-finals. The season started on 9 August 2023, with a 2–0 win over Porto in the Supertaça match, and concluded on 17 May 2024, with a second-place finish in Primeira Liga.