Yang Dong-geun (born September 14, 1981) is a retired South Korean basketball player for Ulsan Mobis Phoebus and the Korean national team, where he participated at the 2014 FIBA Basketball World Cup. During his sixteen-year career, he won the KBL Rookie of the Year and was named Most Valuable Player (MVP) in KBL four times. He spent his entire playing career with Ulsan Mobis Phoebus, having been at the forefront of Ulsan's dominance in the league from the early 2000's. Since retiring after the 2019-20 season, he has returned to the team as a coach.