Josu Sarriegi Zumarraga (born 19 January 1979) is a Spanish former footballer who played as a central defender.

In his country he played professionally with Alavés, Eibar and Athletic Bilbao, appearing in 71 La Liga games over four seasons.

After having first featured professionally for modest and amateur Basque clubs, he signed for Deportivo Alavés in 1999, making his first-team debut on 18 February 2001 in a 1–0 away win against CA Osasuna.

[4] Having missed only two league matches with another Basque side, Athletic Bilbao, in 2006–07, Sarriegi joined Greece's Panathinaikos F.C.

[5] On 26 November 2008 he scored the winning goal for the Athens club as it defeated Inter Milan 1–0 in the UEFA Champions League, in a group-stage fixture at the San Siro.