1930-31 Squad
| NO. | NAME | POS | HEIGHT | WEIGHT | DOB | AGE | BIRTHPLACE | PREFERRED FOOT | |
|---|---|---|---|---|---|---|---|---|---|
 | J. Aizarna | GK | 1/21/1912 | 18 | Zumaia | ||||
| | J. Alfaro | FW | Errenteria | ||||||
| | J. Manuel Alza | DF | 7/27/1906 | 24 | Irun | ||||
| | A. Carrasco | FW | 5/9/1902 | 28 | Donostia/San Sebastián | ||||
| | P. José Echeveste | FW | 3/19/1899 | 31 | Irun | ||||
| | J. Eizaguirre | MF | Irun | ||||||
| | J. Antonio Elicegui | FW | 12/5/1910 | 19 | Castejón | ||||
| | A. Emery | GK | 7/26/1905 | 25 | Hondarribia | ||||
| | J. Julián Errandonea | FW | 11/28/1910 | 19 | Irun | ||||
| | P. Gamborena | MF | 3/14/1901 | 29 | Irun | ||||
| | I. Goyeneche | DF | 6/30/1912 | 18 | Errenteria | ||||
| | R. Lecuona | MF | 3/16/1913 | 17 | Hondarribia | ||||
| | J. Mancisidor | DF | 4/7/1910 | 20 | Irun | ||||
| | A. Maya | MF | 8/19/1910 | 20 | Irun | ||||
| | F. Oyanguren | MF | 5/30/1912 | 18 | Irun | ||||
| | R. Petit | MF | 10/8/1899 | 30 | Dax | ||||
| | L. Regueiro | FW | 7/1/1908 | 22 | Irun | ||||
| | P. Regueiro | MF | 12/19/1909 | 20 | Irun | ||||
| | M. Sagarzazu | FW | 10/15/1903 | 26 | Hondarribia | ||||
| | J. Sotés | MF | 5/10/1903 | 27 | Donostia/San Sebastián | ||||
| | S. Urtizberea | FW | 93 kg | 7/25/1909 | 21 | Irun | |||
| | A. Villaverde | MF | 7/7/1904 | 26 | León |
