Alan Leroy Hairston (born December 11, 1945) is an American former professional basketball player and a college and high school head coach. His high school coaching career has garnered him multiple league, district and state championships, as well as numerous individual awards.
After a stint with the NBA Cleveland Cavaliers in 1970–71, Hairston was released. He went into coaching, serving as head coach at Seattle Central College (formerly Seattle Central Community College) 1975–79. He led the team to the Northwest championship in 1977.
By far, Hairston has made his biggest contributions to the sport of basketball as a prep coach. Widely regarded as one of the best prep hoops coaches in Washington state history, Hairston achieved great success at the helm of the historically dominant boys hoops program at Garfield High School in Seattle, Washington, including guiding the program to five state titles from 1980 through 1991 (1980, 1983, 1986, 1987, and 1991), and two more state runner-up appearances during the same period (1989 and 1990). He also successfully coached the Kent-Meridian (Kent, WA) and Seattle O'Dea High School boys basketball programs to post-season appearances. In assuming the O'Dea post, he took over for the late Phil Lumpkin – also a former NBA basketball player and prep coaching star.