This is a list of English football transfers for the 2003 summer transfer window. Only moves featuring at least one Premier League or First Division club are listed.
The summer transfer window opened on 1 July 2003, although a few transfers took place prior to that date. Players without a club may join one at any time, either during or in between transfer windows. Clubs below Premier League level may also sign players on loan at any time. If need be, clubs may sign a goalkeeper on an emergency loan, if all others are unavailable.
Graham Christopher Stack is a professional football coach and former player, who is the first-team goalkeeping coach at Cardiff City. Stack played as a goalkeeper for Arsenal, Beveren, Millwall, Reading, Leeds United, Wolverhampton Wanderers, Plymouth Argyle, Blackpool, Hibernian, Barnet, Kerala Blasters and Eastleigh. He also played in under-21 internationals for the Republic of Ireland.
Dániel Tőzsér is a Hungarian professional football official and a former midfielder. He works as a sporting director for Debrecen. He also played for the Hungarian national football team. A left-footed player, he played on the central, defensive or the left side of midfield.
Adel Taarabt is a Moroccan professional footballer who plays as an attacking midfielder or winger for Emirati club Al-Nasr and the Morocco national team.
David Ospina Ramírez is a Colombian professional footballer who plays as a goalkeeper for Saudi Professional League club Al Nassr and the Colombia national team.
The 2003–04 season was Manchester United's 12th season in the Premier League, and their 29th consecutive season in the top division of English football.
Eliaquim Hans Mangala is a French professional footballer who plays as a centre-back.
Kyle Louis Bartley is an English professional footballer who plays as a central defender for EFL Championship club West Bromwich Albion.
Benik Tunani Afobe is a professional footballer who plays as a striker for EFL Championship club Millwall. He represented the DR Congo national team on six occasions between 2017 and 2018.
Matthew James Doherty is an Irish professional footballer who plays as a right-back for Premier League club Tottenham Hotspur and the Republic of Ireland national team.
Damián Emiliano Martínez is an Argentine professional footballer who plays as a goalkeeper for Premier League club Aston Villa and the Argentina national team.
Charles Musonda is a Belgian professional footballer who plays for Segunda División club Levante. Mainly an attacking midfielder, he can play as a winger.
The 2018–19 season was West Ham United's seventh consecutive campaign in the Premier League since being promoted in the 2011–12 season. It was West Ham's 23rd Premier League campaign overall and their 61st top flight appearance in their 124th year in existence.
William Alain André Gabriel Saliba is a French professional footballer who plays as a centre-back for Premier League club Arsenal and the France national team.
The 2019–20 season was Arsenal's 28th season in the Premier League, their 101st consecutive season in the top flight of English football and 110th season in the top flight overall. The club participated in the Premier League, FA Cup, EFL Cup and UEFA Europa League.
The 2020–21 season was Tottenham Hotspur's 29th season in the Premier League and 43rd successive season in the top division of the English football league system. After finishing in sixth place in the 2019–20 season, Tottenham entered the UEFA Europa League at the second qualifying round, reaching the last 16 in the competition before being eliminated by Dinamo Zagreb over two legs. In the FA Cup, Tottenham played three rounds, being knocked out by Everton in the fifth round.
The 2021–22 season was Tottenham Hotspur's 30th season in the Premier League, 44th successive season in the top division of the English football league system and 116th season in existence. After finishing in seventh place in the 2020–21 Premier League, Tottenham qualified for the play-off round of the newly formed UEFA Europa Conference League. At the end of June, Tottenham announced Nuno Espírito Santo as the new head coach on a two-year contract. Tottenham announced on 1 November 2021 that they had removed Nuno Espírito Santo along with his coaching staff Ian Cathro, Rui Barbosa and Antonio Dias stating they had "been relieved of their duties." Antonio Conte was appointed as Espírito Santo's successor the following day.
The 2022–23 season is the 128th season in the existence of Manchester City Football Club and their 21st consecutive season in the top flight of English football, where they are competing as two-time defending champions. In addition to the Premier League, Manchester City are also participating in this season's editions of the FA Cup, EFL Cup, Community Shield and UEFA Champions League, entering the latter for the 12th consecutive season. The season is unusual in that the fixture dates of domestic and European competitions were altered to accommodate the 2022 FIFA World Cup played in November and December 2022 in Qatar.
The 2022–23 season is the 148th season in the existence of Aston Villa Football Club and the club's fourth consecutive season in the Premier League. In addition to the league, they will also compete in the FA Cup and the EFL Cup. The season covers the period from 1 July 2022 to 30 June 2023.