1998–99 Athletic Bilbao season

Athletic had finished second the previous season, and though they gathered only five points fewer - all from losing instead of drawing games - this was enough to drag them down to 8th place.

The club had applied and qualified for the Intertoto Cup, but in the end declined to enter the competition.

Squad at end of season[1]

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

No. Pos. Nation Player 1 GK  ESP Juan José Valencia 4 DF  ESP Rafael Alkorta 5 MF  ESP Felipe 6 MF  ESP Josu Urrutia 7 MF  ESP Andoni Imaz 8 MF  ESP Julen Guerrero 9 FW  ESP Santiago Ezquerro 10 DF  ESP Aitor Larrazabal 11 DF  ESP Jesús María Lacruz 12 DF  ESP Carlos García 13 GK  ESP Imanol Etxeberria 14 MF  ESP José Mari 15 DF  ESP Patxi Ferreira

No. Pos. Nation Player 16 MF  ESP Txomin Nagore 17 MF  ESP Joseba Etxeberria 18 MF  ESP Bittor Alkiza 19 DF  ESP Mikel Lasa 20 FW  ESP Ismael Urzaiz 21 DF  ESP Iñigo Larrainzar 22 MF  ESP Javi González 23 MF  ESP Jorge Pérez 24 DF  ESP Roberto Ríos 26 GK  ESP Daniel Aranzubia 27 DF  ESP César 32 MF  ESP Francisco Yeste

Left club during season

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

No. Pos. Nation Player 25 FW  ESP Bolo (to Rayo Vallecano)