Devin Lamar Harris (born February 27, 1983) is an American professional basketball player for the NBA's New Jersey Nets. Harris attended the University of Wisconsin–Madison, and gained national attention for his play at the collegiate level.

Harris was born and raised in Milwaukee, Wisconsin; the son of Terry and Julie Harris. Throughout high school, Harris was a superior athlete and took up basketball and volleyball at Wauwatosa East High School. He only played volleyball for one season, a season in which he gained all-conference honors, before he set that aside to focus on basketball. Harris was nagged by injuries after his sophomore year of high school and was unable to participate in the summer basketball camps and tournaments that are ever important in the recruiting process. Harris' number 20 jersey was retired by Wauwatosa East at ceremonies held in 2007.

Harris exploded his senior season at Wauwatosa East, setting school scoring records through an undefeated regular season. Harris was named Wisconsin's "Mr. Basketball" for 2001, edging out Travis Diener of Fond du Lac High School. Harris finally accepted an offer to play for Dick Bennett at the University of Wisconsin–Madison. Bennett retired in the midst of the upcoming season and by the time Harris arrived on campus, Bo Ryan was the head coach.