|Full name||José Ignacio Aizpurúa Alzaga|
|Date of birth||5 May 1970|
|Place of birth||Irun, Spain|
|Height||1.90 m (6 ft 3 in)|
|2002–2003||→ Levante (loan)||9||(0)|
|* Senior club appearances and goals counted for the domestic league only|
Born in Irun, Basque Country, Aizpurúa made his professional debuts at the age of 21, playing three seasons with hometown's Real Unión, the last spent in the third division. Subsequently, he left for UD Salamanca, where he remained eight years making nearly 200 official appearances; in 1995–96 he appeared in 40 La Liga games, but the Castile and León side was relegated back to the second level after finishing last.
In summer 2003, after a season loaned at Levante UD by Real Sociedad – which first loaned the player to Burgos CF, aborting the move following the club's relegation from division two due to irregularities – Aizpurúa signed permanently with the same team, only managing to be a backup in his four overall seasons at the Estadio Ciudad de Valencia; in 2004–05, the only year he spent in the top flight during this timeframe, he did not manage to appear in the league, playing understudy to Juan Luis Mora as the Granotas ranked 18th with the subsequent relegation.
Following his retirement in February 2007 at the age of 37 (he was not registered during that campaign), Aizpurúa continued working with Levante in directorial capacities and as youth system coordinator.
- Aizpurua se entrena solo mientras le buscan equipo (Aizpurua trains alone while looking for a new club); Mundo Deportivo, 3 August 2002 (in Spanish)
- Iñaki Aizpurua ya es jugador del Levante (Iñaki Aizpurua is a Levante player); Mundo Deportivo, 8 August 2002 (in Spanish)
- Su traspaso al Levante, gratis (His transfer to Levante, for free); Mundo Deportivo, 24 July 2003 (in Spanish)
- Aizpurúa se despide de la afición levantinista (Aizpurúa says goodbye to levantinistas); Levante UD, 8 February 2007 (in Spanish)