| No. | Player | Nationality | Born | Position | Height |
|---|---|---|---|---|---|
| 1 | Xabier Otermin |  Spain | 1977 | Goalkeeper | 1.81 m |
| 13 | Xabier Jáuregi | Spain | 1975 | Goalkeeper | 1.86 m |
| Jon Irazusta | Spain | 1986 | Goalkeeper | 1.83 m | |
| Charlie Pérez | Spain | 2002 | Goalkeeper | 1.89 m | |
| Lander Emery | Spain | 2003 | Goalkeeper | 1.90 m | |
| 2 | Zuhaitz Gurrutxaga | Spain | 1980 | Defender | 1.80 m |
| 3 | Iker Gabarain | Spain | 1977 | Defender | 1.71 m |
| 4 | Oier Larrainzar | Spain | 1977 | Defender | 1.84 m |
| 5 | Iosu Iglesias | Spain | 1976 | Defender | 1.77 m |
| 6 | Jesús Lacruz | Spain | 1978 | Defender | 1.78 m |
| 21 | Hodei Mendinueta | Spain | 1986 | Defender | 1.82 m |
| 22 | Markel Robles Zugadi | Spain | 1979 | Defender | 1.94 m |
| 23 | Iñaki Descarga | Spain | 1976 | Defender | 1.74 m |
| Imanol Ezkurdia | Spain | 1999 | Defender | 1.80 m | |
| Imanol Baz | Spain | 2001 | Defender | 1.84 m | |
| Javi Domínguez | Spain | 2001 | Defender | 1.95 m | |
| Julen Etxabeguren | Spain | 1991 | Defender | 1.89 m | |
| Iosu Esnaola | Spain | 1986 | Defender | 1.86 m | |
| Gorka Kijera | Spain | 1986 | Defender | 1.76 m | |
| Hugo Carrillo Mariscal | Spain | 2002 | Defender | 1.85 m | |
| 6 | Joseba Aguirre | Spain | 1977 | Midfielder | 1.76 m |
| 11 | Juan Seguro | Mexico | 1984 | Midfielder | 1.73 m |
| 14 | Asier Salcedo | Spain | 1980 | Midfielder | 1.80 m |
| 20 | Eneko Romo | Spain | 1979 | Midfielder | 1.82 m |
| Alain Eizmendi | Spain | 1990 | Midfielder | 1.71 m | |
| Mikel Martins | Spain | 1983 | Midfielder | 1.77 m | |
| Mikel Abaroa | Spain | 1988 | Midfielder | 1.85 m | |
| Josu Hernáez | Spain | 1985 | Midfielder | 1.76 m | |
| 7 | Paul Abasolo | Spain | 1984 | Forward | 1.84 m |
| 9 | Iñaki Goikoetxea | Spain | 1982 | Forward | 1.80 m |
| 10 | Sergio Francisco | Spain | 1979 | Forward | 1.80 m |
| 17 | Félix Quero | Spain | 1982 | Forward | 1.71 m |
| 19 | Gorka Brit | Spain | 1978 | Forward | 1.76 m |
| Jorge Galán | Spain | 1989 | Forward | 1.73 m | |
| Ander Lambarri | Spain | 1981 | Forward | 1.86 m | |
| Julen Iriarte | Spain | 1991 | Forward | 1.86 m | |
| Asier Benito | Spain | 1995 | Forward | 1.80 m | |
| Berto Cayarga | Spain | 1996 | Forward | 1.70 m | |
| Kun Temenuzhkov | Bulgaria | 2000 | Forward | 1.65 m | |
| Ekhi Bravo | Spain | 1997 | Forward | 1.85 m |
