The 2013–14 season was Sport Lisboa e Benfica's 110th season in existence and the club's 80th consecutive season in the top flight of Portuguese football. It involved Benfica competing in the Primeira Liga, Taça de Portugal, Taça da Liga, the group stage of the UEFA Champions League, and the knockout phase in the UEFA Europa League. Benfica qualified for the Champions League by coming second in the previous Primeira Liga.

On 4 June 2013, coach Jorge Jesus renewed his contract for a further two seasons, making him the first manager since 1958–59 with Otto Glória to start a fifth consecutive season at Benfica.

The season was one of the best in Benfica's history, as the club won its 33rd title, its fifth Taça da Liga (without conceding a single goal), reached the Europa League final for the second consecutive season (without any defeat) and won its 25th Taça de Portugal achieving the tenth double (record) of the club. By winning the Primeira Liga, Taça de Portugal and Taça da Liga, Benfica achieved a unique treble in Portugal. Benfica also finished the season unbeaten in home matches, and the 57 games played are a club record for a single season.

The pre-season started on 1 July 2013 with medical evaluations on the players. After a brief period of exercising at the Caixa Futebol Campus the team was due to travel on 8 July for Évian-les-Bains in France, but on 6 July, it chooses to stay at Futebol Campus instead of travelling to France, but still maintained the three pre-season games against Ètoile Carouge, Bordeaux and Sion. The team participated in the semi-finals of the tournament Lisbon Football Association Honour's Cup, where they played against Sporting CP B, using a mix of first team players like Ola John, Rodrigo or Jardel, with the remaining players from Benfica B. In the 3rd/4th place match, Benfica fielded a team with only a first team player, Paulo Lopes. On 24, 26 and 27 July, Benfica faced Penãrol, Levante and Nice at Estádio Algarve, respectively. On 31 July, Benfica played Elche on their presentation game in Elche. They then took part in the sixth edition of the Eusébio Cup against São Paulo on 3 August, ending their pre-season on 9 August against Napoli as part of the MSC Crociere Cup.

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