The 2013–14 season was Athletic Bilbao's 115th in existence and the club's 83rd consecutive season in the top flight of Spanish football.

In addition to La Liga, Athletic Bilbao also competed in the Copa del Rey, being eliminated in the quarter-finals.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

EU = if holds or not a European Union passport; Country: when 2 flags, 1st flag = country that plays for internationally, 2nd flag = country of birth; N = number on jersey; P = Position (for position name, pause mouse pointer on abbreviation); Name = Name on jersey (for more extensive name, pause mouse pointer on name); Age = age on the day of the signing; Moving from = only indicate the club the player was playing before start playing for this club in this season, for the type of the moving see Status column; Moving to = only indicates the club the player is going to play next, for the type of the moving see Status column; Ends = when the player's current contract ends; n/a = Not applicable.

Total income: €0 Expenditure: €15,100,000 The numbers and stats are established according to the official website: www.athletic-club.net Win Draw Loss Kickoff times are in CET.