A5 and variants may refer to:

Josep "Pep" Guardiola i Sala (Catalan pronunciation: [ʒuˈzɛb ɡwəɾðiˈɔɫə]; born 18 January 1971) is a Spanish football manager and former player. As a player, Guardiola played as a defensive midfielder and spent the majority of his playing career with FC Barcelona. He was part of Johan Cruyff's "dream team" that won Barcelona's first European Cup. He also played for Brescia and Roma in Italy; Al-Ahli in Qatar; and for Dorados de Sinaloa in Mexico while attending managing school. While playing in Italy, he served a four-month ban for a positive drug test although he was cleared of wrongdoing twice on appeal in 2009 before the Courts of Justice of the Italian Football Federation (FIGC) and the Federal Anti-Doping Courts of the Italian Olympic Committee (CONI). As an international, he played for Spain, and in friendly matches for Catalonia.

After retiring as a player, Guardiola became coach of FC Barcelona B. On 8 May 2008, Barcelona President Joan Laporta announced that Guardiola would succeed Frank Rijkaard as the first team manager. He signed his contract on 5 June 2008. In his first season as manager, Barcelona won the treble of La Liga, the Copa del Rey, and the Champions League. In doing so, Guardiola became the youngest UEFA Champions League-winning manager ever. The following season, Guardiola and Barcelona won the Supercopa de España, the UEFA Super Cup, and the FIFA Club World Cup, bringing the manager's tally to the maximum of six trophies in six competitions in one year, thus completing the first ever sextuple.

Francesc "Tito" Vilanova i Bayó (born 17 September 1969) is a Spanish retired footballer who played as a central midfielder, and the current manager of FC Barcelona.

After an unassuming professional career - only played 26 La Liga games in three years combined - he went on to work with FC Barcelona (his first club) as an assistant coach under Josep Guardiola, being part of the squads which won 14 major titles.

Vilanova was born in Bellcaire d'Empordà, Girona, Catalonia. After emerging in the youth ranks of local FC Barcelona, he left the La Liga giants in 1990, unable to break through into the first team. His next club was also in his native region, UE Figueres, with the player helping the team to its best ever second division classification, in the 1991–92 season (third place); the club would eventually face Cádiz CF in the promotion playoffs, losing 1–3 on aggregate.

Subsequently, Vilanova moved to the top level with Celta de Vigo, but appeared rarely over the course of three full seasons, returned to division two in 1995, and representing CD Badajoz, RCD Mallorca - contributing with ten games as the Balearic Islands side promoted to the top flight - UE Lleida and Elche CF, retiring at nearly 34 with lowly UDA Gramenet, in his native region.