Bryant Kevin Dunston Jr. is an American-born naturalized Armenian professional basketball player for Virtus Bologna of the Lega Basket Serie A (LBA) and the EuroLeague. He also represents the senior Armenian national team in international competition. Standing at a height of 6 ft 8 in (2.03 m), Dunston plays at the center position.

The EuroLeague Best Defender is an annual basketball award of the European premier level EuroLeague. It is awarded to the best defensive player throughout the season, up 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's head coaches. Dimitris Diamantidis of Panathinaikos Athens, won the first five awards, from 2005 to 2009.