José Antonio Querejeta

José Antonio Querejeta Altuna (born 19 March 1957), known as Josean Querejeta, is a retired basketball player of Saski Baskonia, Real Madrid, Joventut Badalona and CAI Zaragoza, and the current president of Vitoria-Gasteiz-based Saski Baskonia since 1988, following the conversion of the club into a S.A.D.

From 2013 his Avtibask S.L. group also held a controlling stake in the city's football club Deportivo Alavés.

In October 2025, he was fined after he went outside the referee's locker room to confront them during halftime of the game against Panathinaikos B.C. and he was fined for committing acts representing a lack of respect against the officiating crew.

Honors With Baskonia (as a player) Copa Asociación: (1) 1985 With Baskonia (as a president) Spanish Championship: (3) 2001–02, 2007–08, 2009–10 Spanish Cup: (6) 1995, 1999, 2002, 2004, 2006, 2009 Spanish Supercup: (4) 2005, 2006, 2007, 2008 Basque Cup: (2) 2011, 2012 FIBA Saporta Cup: (1) 1995–96

With Real Madrid Spanish Championship: (2) 1979, 1980 Spanish Cup: (1) 1980 FIBA European Champions Cup: (1) 1979–80

Awards Gianluigi Porelli EuroLeague Executive of the Year: (2) 2005, 2016