Luke Theodore Walton (born March 28, 1980) is an American professional basketball coach and former player who is the lead assistant coach for the Detroit Pistons of the National Basketball Association (NBA). He played 10 seasons in the NBA as a forward, winning two NBA championships with the Los Angeles Lakers. He also won a title as an assistant coach with the Golden State Warriors before serving as the head coach of the Lakers from 2016 through 2019. Additionally, Walton served as the head coach of the Sacramento Kings from 2019 to 2021.

Walton played college basketball with the Arizona Wildcats. He was a second-team All-American and a two-time first-team all-conference selection in the Pac-10. He was selected in the second round of the 2003 NBA draft by the Lakers. After the 2010 NBA Finals, Walton and his father, Hall of Famer Bill Walton, became the first father and son to have both won multiple NBA championships: Bill won in 1977 and 1986, and Luke in 2009 and 2010. His best season statistically was 2006–07 with over 11 points, 5 rebounds, and over 4 assists per game.

As the Warriors' interim head coach in 2015–16, he guided the team to the longest winning streak to open a season in league history at 24 games.