Alan Lybrooks Henderson (born December 2 1972 in Morgantown, West Virginia) is a professional basketball player for the Cleveland Cavaliers in the NBA. He attended Brebeuf Jesuit Preparatory School in Indianapolis, Indiana. In 1994, he was a part of the USA Basketball team for the Goodwill Games. He stands 6'9" (2.06 m) tall.
While at Indiana University, Henderson led the team in rebounding all four years. Currently, he is the only Indiana University player to rank in the school's top five in scoring, rebounding, blocked shots and steals.
In his rookie year (1995-96) with the Hawks, he ranked 2nd on the team in total blocked shots (52). During the 1997-98 season, he was the recipient of the NBA Most Improved Player Award. He remained a member of an Atlanta team that for nine of his tenured seasons did not improve significantly nor get very far in the postseason when they qualified for the Playoffs.
On August 4 2004, along with Jason Terry, he was traded to the Dallas Mavericks for Antoine Walker and Tony Delk. He was then traded to the Milwaukee Bucks along with Calvin Booth for Keith Van Horn on February 24 2005. The Bucks then waived Henderson the following day. On March 1, 2005, he re-signed with the Mavericks. On September 17, 2005, Alan signed with the Cleveland Cavaliers. He has averaged 8.6 points, 5.3 rebounds, and 0.7 assists per game throughout his career.