Greg Buckner, American basketball player and coach
Gregory Derayle Buckner (born September 16, 1976) is an American former professional basketball player who is an assistant coach for the Cleveland Cavaliers of the National Basketball Association (NBA). He had previously served as an assistant coach for the Memphis Grizzlies.

Selected in the second round (53rd pick overall) of the 1998 NBA draft by the Dallas Mavericks after playing college basketball at Clemson, he played for the Mavericks, Philadelphia 76ers, Denver Nuggets, Minnesota Timberwolves and Grizzlies. Buckner's first professional experience came with the Grand Rapids Hoops of the Continental Basketball Association (CBA), where he averaged 8.6 points and 3.9 rebounds per game in the 1998–99 season.