AAU is a three-letter acronym that may refer to:

LeBron Raymone James (/ləˈbrɒn/; born December 30, 1984) is an American professional basketball player for the Miami Heat of the National Basketball Association (NBA). Nicknamed "King James", he was a three-time "Mr. Basketball" of Ohio in high school, and was highly promoted in the national media as a future NBA superstar while a sophomore at St. Vincent – St. Mary High School. He was selected with the number one pick in the 2003 NBA Draft by the Cleveland Cavaliers. Listed as a small forward, James has set numerous youngest player records since joining the league. He was named the NBA Rookie of the Year in 2003–04, was named the NBA Most Valuable Player in 2009, 2010, and 2012 and has been both an All-NBA selection and an All-Star every season since 2005. In 2010, a much-publicized free agency process ended with James signing with the Miami Heat.

James led the Cleveland Cavaliers to consecutive playoff appearances from 2006 through 2010. In 2007, the Cavaliers advanced to the NBA Finals for the first time in franchise history, but lost to the San Antonio Spurs. In 2011, James and the Miami Heat advanced to the NBA Finals but lost to the Dallas Mavericks. James has been a member of the USA national team, winning a bronze medal at the 2004 Olympics and gold at the 2008 Olympics.

Austin James Rivers (born August 1, 1992, in Santa Monica, California) is an American college basketball player for Duke University. Rivers led Winter Park High School to back-to-back Florida 6A state championships in 2010 and 2011. He also played in the 2011 Nike Hoop Summit for the USA National Team, and in addition, Rivers also participated in the 2011 McDonald's All-American Game. Rivers was one of the top rated high school basketball players in the class of 2011, being rated as high as No. 1 by Rivals.com. On September 30, 2010, Rivers committed to Duke University. His father, Doc Rivers, coaches the Boston Celtics. His older brother, Jeremiah Rivers, plays for KK Mega Vizura in Serbia. His older sister, Callie Rivers, played volleyball for the University of Florida.

Rivers was ranked #1 by Rivals.com, while being rated as the #3 player by ESPN and Scout.com. In 2010, Rivers led Winter Park High School to the school's first state title in a 76-57 win against Dr. Phillips High School in the 6A state championship. Rivers scored 23 points in the game. In June 2010, Rivers was a part of the gold medal winning team at the FIBA Americas U18 Championship. He set a team USA record for an U18 event with 35 points against Canada. On August 5, 2010, Rivers was named to the 5th annual Boost Mobile Elite 24 game, where he was named co-MVP. He had 25 points, 4 rebounds, and 4 assists. On March 5, 2011, Rivers led Winter Park to back to back Florida 6A state championships with a 52-44 victory over Dr. Phillips High School, in which he had 25 points, 11 rebounds, and 4 steals.

Grayson 'The Professor' Boucher (born June 10, 1984) is an American Streetball player. He is most known for playing on the highly stylized, international AND1 Mixtape Tour; he has also appeared in several movies. Boucher is 5'10" and weighs 155 pounds (1.78 m, 70 kg).

Boucher was born and raised in Keizer, Oregon.

Boucher played at Salem Academy in high school, a 2A school in Salem, Oregon

When the AND1 Mixtape Tour stopped in Portland, Oregon, Boucher and his brother attended, as fans. But Boucher found out there was an "open run" tryout to join the tour, and earned a spot on the team. By summer 2004, Boucher was featured prominently in the Tour's marketing, appearing on the main page of their web site and in various advertisements. After years of hard work and chasing his passion, Grayson Boucher had found himself on a great run with AND1. He has played in over 30 countries and has been featured in 6 seasons of “Streetball” on ESPN, 5 AND1 Mixtape DVD’s, 4 AND1 Commercials and an And1 Video Game. Not one to ever remain content, he continues training and playing every day even when he’s on tour year round.