The EuroLeague Best Defender award is the annual award for the EuroLeague's best defensive player throughout the season, until the EuroLeague Final Four stage of the season. The award began in the 2004–05 season, and the winner is selected by the EuroLeague head coaches. Dimitris Diamantidis of Panathinaikos Athens won the first five awards, from 2005 to 2009.