Athletic Club Bilbao 2002/2003
| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| GK | Daniel Aranzubia | 1979-09-18 | 185 | 76 | |||
| D | Aitor Ocio | 1976-11-28 | 187 | 79 | Retired | ||
| D | Carlos Gurpegui | 1980-08-19 | 181 | 77 | 2016-06-30 | ||
| M | Pablo Orbaiz | 1979-02-06 | 178 | 76 | |||
| F | Aritz Aduriz | 1981-02-11 | 182 | 78 | 2018-06-30 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 30.Jun | Asier Villalibre (F) | Real Valladolid | Athletic Club Bilbao | Confirmed | |
| 30.Jun | Gorka Santamaría (F) | Recreativo Huelva | Athletic Club Bilbao | Confirmed | |
| 30.Jun | Gorka Santamaría (F) | Cádiz CF | Athletic Club Bilbao | Confirmed | |
| 30.Jun | Óscar Gil (D) | Real Oviedo | Athletic Club Bilbao | Confirmed | |
| 30.Jun | Iago Herrerín (GK) | CD Leganés | Athletic Club Bilbao | Confirmed | |
| 30.Jun | Unai López (M) | CD Leganés | Athletic Club Bilbao | Confirmed | |
| 30.Aug | Borja Viguera (F) | Athletic Club Bilbao | Sporting de Gijón | Confirmed | |
| 17.Aug | Guillermo (F) | Athletic Club Bilbao | Elche CF | Confirmed | |
| 17.Aug | Óscar Gil (D) | Athletic Club Bilbao | Real Oviedo | Confirmed | |
| 12.Aug | Jon Aurtenetxe (D) | Athletic Club Bilbao | CD Mirandes | Confirmed |