Paolo Cesare Maldini (; born 26 June 1968) is an Italian football executive and former professional footballer who most recently served as the president of the technical sector of the Italian Football Federation. He spent his entire career playing as a left-back or as a centre-back for AC Milan and the Italy national team. He is widely regarded as one of the greatest players of all time. As the Milan and Italy captain for many years, he was nicknamed "Il Capitano". Maldini held the record for appearances in Serie A (647), until he was surpassed by Gianluigi Buffon in 2020. He also holds the joint-record for most European Cup/UEFA Champions League final appearances (8) alongside Paco Gento. From 2018 to 2023 he worked at AC Milan as sporting director and is a co-owner of USL Championship club Miami FC.

Maldini was a one-club man, spending all 25 seasons of his playing career in Serie A with Milan and retiring at the age of 41 in 2009. He won 26 trophies with Milan: the European Cup/UEFA Champions League five times, seven Serie A titles, one Coppa Italia, five Supercoppa Italiana titles, five European/UEFA Super Cups, two Intercontinental Cups, and one FIFA Club World Cup. Maldini won the Best Defender award at the UEFA Club Football Awards at the age of 39, as well as the Serie A Defender of the Year Award in 2004. Following his retirement, Milan retired his number 3 shirt.

Maldini made his debut for Italy in 1988 and played for 14 years before retiring in 2002 with 7 goals and 126 caps. He held the record for appearances with Italy, until he was surpassed by Fabio Cannavaro and Gianluigi Buffon. Maldini captained Italy for eight years and held the record for appearances as Italy's captain with 75, until he was again surpassed by Cannavaro and Buffon. With Italy, Maldini took part in four FIFA World Cups and three UEFA European Championships. Although he did not win a tournament, he reached the final of the 1994 World Cup and Euro 2000 and the semi-final of the 1990 World Cup and Euro 1988. He was elected into the all-star teams for all of these tournaments.

Maldini came second to George Weah for FIFA World Player of the Year in 1995. He also came third in the Ballon d'Or rankings in 1994 and 2003. In 2002, he was named in the FIFA World Cup Dream Team. In 2004, Pelé named him in the FIFA 100 list of the world's greatest living players. He was ranked 21st in World Soccer magazine's list of the 100 greatest players of the 20th century. He was also named in the Ballon d'Or Dream Team in 2020. Maldini held the record for most appearances in UEFA Club competitions, with 174, until he was surpassed by Iker Casillas in 2017. He holds the record for appearances with Milan (902) and is one of the few players to have made over 1,000 career appearances (the first Italian to achieve the feat, since the time matches are recorded). In December 2012, he was inducted into the Italian Football Hall of Fame.

Club career 1978–1987: Youth career, AC Milan senior debut and early professional career In 1978, at the age of 10, Maldini had his first tryout for AC Milan youth academy. Before that, he had only played street football. He successfully played the test game as a right midfielder or winger in the 4–4–2 formation and was accepted into his age group's squad. He would continue playing in this position until the age of 14, when he was moved to right full-back. Due to him being good on the ball with both of his feet, he would sometimes be fielded on the left side as well.

Maldini won the Coppa Italia Primavera with the Milan Youth side during the 1984–85 season, and he made his league debut for Milan under manager Nils Liedholm during the same season on 20 January 1985, replacing the injured Sergio Battistini in a match against Udinese at age 16. It was his only league appearance of the campaign, but he was immediately made a member of the starting eleven the following season, at age 17, at right-back, being handed the number 3 shirt, which had previously also belonged to his father, Cesare. Maldini also made his Coppa Italia debut in 1985, on 21 August, while his debut in European competition also came later that same year, on 18 September. He scored the first of his 29 goals in Serie A on 4 January 1987 in a 1–0 win against Como.

1987–1991: Domestic and international success with The immortals The 1987–88 Scudetto under Arrigo Sacchi marked Maldini's first trophy, and the first of seven league titles, with the club. Nicknamed "The Immortals", Sacchi's Milan side is remembered for including the Dutch trio of Frank Rijkaard, Ruud Gullit and Marco van Basten, as well as the Italian midfielders Carlo Ancelotti, Roberto Donadoni (and later Demetrio Albertini), and a strong defensive lineup. Under Sacchi and later Fabio Capello, Maldini formed with long-timers Franco Baresi, Alessandro Costacurta, Mauro Tassotti, as well as Filippo Galli, Stefano Nava and later Christian Panucci, one of football's strongest defensive quartets of all time. During the 1987–88 Serie A season, Milan only conceded 14 goals, finishing with the best defence in Italy, as they went on to win the Serie A title. Maldini went on to win the 1988 Supercoppa Italiana with Milan the following season, and followed up this trophy with back to back European Cup titles in 1988–89 and 1989–90, while Milan finished in third and in second place in Serie A during those respective seasons. On 19 February 1989, Maldini made his 100th appearance in Serie A.

Milan reached the final of the 1989–90 Coppa Italia, losing out to Juventus. Milan also managed to capture successive European Super Cup titles in 1989 and 1990, as well as successive Intercontinental Cup titles, once again in 1989 and 1990. The following season, in Sacchi's final season with the club, Milan were eliminated in the quarter-finals of the European Cup by eventual finalists Marseille, and finished second in Serie A, behind Sampdoria, once again with the best defence in the league, conceding only 19 goals. Milan reached the semi-finals of the Coppa Italia, losing out to eventual champions Roma. In 1989, Maldini was awarded the Bravo Award, as the best under-23 player in European Competitions.

1991–1996: Continued success with The invincibles Under Sacchi's replacement, Fabio Capello, Milan continued to be a dominant force in Italy and in Europe. Maldini was also part of Milan's undefeated Serie A team, which won the championship in the 1991–92 season; in total, Milan went unbeaten for an Italian record of 58 league matches, earning the nickname "The Invincibles". This championship was Milan's first of three consecutive Serie A titles under Capello in the early 1990s. Maldini helped Milan defend the Serie A title the following season, and reach the first of three consecutive UEFA Champions League finals. Milan lost the 1993 Champions League final in a 1–0 defeat to Marseille. That season, Maldini scored his first goal in European Competitions on 21 October 1992 in a 1–0 Champions League win against Slovan Bratislava, and also made his 200th appearance in Serie A on 4 October of the same year. The following season, Milan captured their third consecutive Serie A title, finishing with the best defence in Italy, conceding just 15 goals. Maldini also helped lead Milan to a second consecutive Champions League final, where he helped his team defeat Barcelona. Due to Alessandro Costacurta's suspension and injuries sustained to Franco Baresi, Jean-Pierre Papin and Marco van Basten, Barcelona's "Dream Team", coached by Johan Cruyff, were heavy favourites to win the trophy, with the formidable attacking duo of Romário and Hristo Stoichkov. Despite their key absences, Maldini helped the Milan defence keep a clean sheet and overcome Barcelona 4–0 in the final, with two goals from Daniele Massaro and one each from Dejan Savićević and Marcel Desailly.

After winning his third Champions League title and reaching the 1994 World Cup final, Maldini became the first defender ever to win World Soccer magazine's annual World Player of the Year Award. During his acceptance speech, Maldini called his milestone "a particular matter of pride because defenders generally receive so much less attention from fans and the media than goalscorers. We are more in the engine room rather than taking the glory". He then singled out Milan captain Franco Baresi as a player who "really [deserved] to receive the sort of award I have received". Maldini also placed third in the 1994 Ballon d'Or, behind Stoichkov and compatriot Roberto Baggio, and fifth in the FIFA World Player of the Year Award.

The following season, Milan and Maldini captured their third consecutive Supercoppa Italiana under Capello, and won the European Super Cup, missing out on the Intercontinental Cup. After three consecutive titles, Milan were unable to retain their Serie A title, although they reached their third consecutive Champions League final, where they were defeated 1–0 by Ajax. Maldini came second behind future teammate George Weah in the 1995 FIFA World Player of the Year Award for his performances. On 17 February 1995, he made his 300th appearance in Serie A. Maldini was able to capture his fifth Serie A title, and his fourth under Capello, the following season.

1996–2001: Assuming the captaincy, struggles, and 1999 Serie A title Following Capello's departure, and the ageing and retirement of several key players, Milan suffered disappointing results during the next few seasons, undergoing several managerial changes. Milan lost the Supercoppa Italiana to Fiorentina in 1996, and failed to qualify for European competitions for two consecutive seasons, as well as suffering a group stage elimination in the 1996–97 Champions League. Following Franco Baresi's and Mauro Tassotti's retirement after the 1996–97 season, Maldini was appointed Milan's captain. Despite the difficulties Milan encountered during this period, through Maldini's leadership, they reached the Coppa Italia final in 1998, losing to Lazio, and won the 1998–99 Serie A title under Alberto Zaccheroni, finishing one point ahead of Lazio. He made his 400th Serie A appearance on 25 April 1999. In the 1999–2000 season, Milan lost the Supercoppa Italiana against Parma, finished third in Serie A and finished bottom of their Champions League group. Milan were eliminated in the second round of the Champions League the next season and finished in sixth place in Serie A, failing to qualify for the Champions League, and participated in the UEFA Cup the following season.

2001–2007: New era of success

Milan again became a dominant force in Italy and in Europe under Carlo Ancelotti. In the 2001–02 season, Milan finished in fourth place, qualifying for the Champions League, and also reached their best ever finish in the UEFA Cup, losing in the semi-finals. In 2002, Maldini was awarded the Premio Nazionale Carriera Esemplare "Gaetano Scirea", for his career achievements and personality. The following season, Maldini lined up with Alessandro Nesta, Alessandro Costacurta and Cafu, who, along with Jaap Stam during the 2004–05 season, formed a formidable defensive lineup in Italy and in Europe. Milan finished third in Serie A, but Maldini won the first Coppa Italia of his career, defeating Roma in the final. On 15 March 2003, he made his 500th appearance in Serie A.