Alan Webb (born January 13, 1983, in Ann Arbor, Michigan) the American record holder in the mile, with a time of 3:46.91. Webb represented the United States at the 2004 Summer Olympics in the men's 1500-meters race. He competed professionally for Nike.

Webb attended South Lakes High School in Reston, Virginia. In 1999, he broke Jim Ryun's national sophomore mile record of 4:07.8 by running 4:06.94. During the fall season of his senior year, Webb placed second at the 2000 Foot Locker Cross Country Championships behind Dathan Ritzenhein. At the New Balance Games in January 2001, Webb's mile time of 3:59.86 at New York City’s Armory made him the first American high schooler ever to run a sub-four minute mile indoors. Four months later, at the age of 18 years, 4 months, and 14 days, on May 27, 2001 at the Prefontaine Classic, Webb ran a mile in 3:53.43 to shatter Ryun's 36-year-old national high school record of 3:55.3. En route Webb passed the 1500 mark in 3:38.26 to take down Ryun's 37-year-old high school AR of 3:39.0 set in 1964. He followed up his run at Prefontaine by winning the Virginia State High School 800 m title in 1:47.74 to become the fourth-fastest high schooler ever at that distance. He was Track and Field News "High School Athlete of the Year" in 2001.

Webb competed professionally for Nike. In 2004 he became an Olympian by winning the 1500 m in the U.S. Olympic Trials. In 2005, he won another national title at 1500 m, and made it to the Finals of the World Championships in Helsinki.

In 2007, Webb once again won the national championship in the 1500 m run, surging past Bernard Lagat in the final 50 meters for the title. He then finished 8th in the final of the 1500 m at the World Championships in Osaka, Japan. On July 6, 2007 Webb won the IAAF Golden League meet 1500 m race in Paris in a lifetime best of 3:30.54, third fastest on the American list. On July 21, 2007, at a meet in Brasschaat, Belgium, Webb broke the American record in the mile. His time of 3:46.91 bested the 25-year-old record of 3:47.69 run by Steve Scott.