Ralph Adolphus Lewis (born March 28, 1963) is an American former professional basketball player.

In college, Lewis scored 1,807 points (15.6 ppg average) in his four years at La Salle.

Lewis was selected by the Boston Celtics in the 1985 NBA draft and began his career in 1987 with the Detroit Pistons.

[1][2] Prior to that he was the head coach of the NBA Development League's Huntsville Flight for three seasons, compiling a 73–71 win–loss record.

[2] On December 26, 2010, Lewis was one of three assistants hired to serve under interim Charlotte Bobcats head coach Paul Silas.