List of Athletic Bilbao seasons

This is a list of seasons played by Athletic Bilbao in Spanish and European football, from 1898 to the most recent completed season. It details the club's achievements in major competitions, and the top scorers for each season.

The club has won the League eight times, the Spanish Cup 24 times (including one disputed victory competing as Vizcaya), the Spanish Super Cup three times (once by default after completing a double), and the Copa Eva Duarte once.

Key
Key to league record:
 * Pos = Final position
 * Pld = Matches played
 * W = Matches won
 * D = Matches drawn
 * L = Matches lost
 * GF = Goals for
 * GA = Goals against
 * Pts = Points

Key to rounds:
 * W = Winner
 * F = Final
 * SF = Semi-finals
 * QF = Quarter-finals
 * R16 = Round of 16
 * R32 = Round of 32
 * R64 = Round of 64


 * R5 = Fifth round
 * R4 = Fourth round
 * R3 = Third round
 * R2 = Second round
 * R1 = First round
 * GS = Group stage