|Full name||Agustín Aranzábal Alkorta|
|Date of birth||15 March 1973|
|Place of birth||Bergara, Spain|
|Height||1.86 m (6 ft 1 in)|
|Playing position(s)||Left back|
|1992-1994||Real Sociedad B||34||(7)|
|* Senior club appearances and goals counted for the domestic league only|
Aranzábal was born in Bergara, Gipuzkoa. A product of Basque Country giants Real Sociedad's youth system he first appeared with the main squad on 21 February 1993, in a 1-5 away loss against Deportivo de La Coruña. After two seasons playing mainly with the reserves, he went on to be an undisputed first-choice for one full decade, for instance playing 32 games for the 2002-03 runners-up.
In July 2004, still in La Liga, Aranzábal moved to Real Zaragoza, where he was used as a backup to Paraguayan Delio Toledo. He retired after a small stint with amateur side CD Vera Puerto de la Cruz in Canary Islands, with ex-Spain international (also a Real Sociedad teammate) Javier de Pedro also starting the campaign but being promptly dismissed.