Reginald Wayne Miller (born August 24, 1965) is a retired American professional basketball player. Miller spent the entirety of his 18-year NBA (National Basketball Association) career with the Indiana Pacers. Miller was known for his precision three-point field goal shooting, especially in clutch situations. He holds the NBA record for career three-pointers made (List of most three-point field goals made in National Basketball Association history) (2,560). Currently, he works as an NBA commentator for TNT (NBA on TNT). He is the younger brother of fellow TNT (NBA on TNT) sportscaster Cheryl Miller and former Major League Baseball player Darrell Miller.

Miller is one of five Pacers to have his jersey (#31) retired by the team (the others are Roger Brown, Mel Daniels, Bobby "Slick" Leonard (Bobby Leonard) and George McGinnis). Miller was also selected for the Pacers 40th anniversary team in 2007.

Millers role in the bitter Knicks-Pacers rivalry in the 1990s Eastern Conference playoffs, characterized by remarkable and timely three-point shooting by Miller and his confrontations with Knicks fan Spike Lee, earned him the nickname "Knick Killer".