Alan Lawrence Culpepper (born September 15, 1972) is an American distance runner and two time United States Olympian (2000 & 2004).

In 1996 he won the NCAA outdoor 5,000 m title and placed 10th at the Olympic Trials in that event; the following year he improved to 2nd at the USATF Nationals (behind Bob Kennedy) and represented the USA at the 1997 World Championships.

In 2000, he took second in the 10,000 m at the U.S. Olympic Trials, overtaking champion Mebrahtom Keflezighi in the final lap but not quite managing to pass him by the finish line.

Renewing his long-time rivalry with Keflezighi, Culpepper bested "Meb" in 2:11:42, with the lead changing several times in the final miles.

[1] In 2005, Culpepper ran a 13:25.75 personal best in the 5,000 meter run at the 2005 Norwich Union British Grand Prix in London, England.

[4] Alan assumed the head cross country coach position at Fairview High School (Boulder, Colorado) for the 2019 season.

[5] Alan assumed the head cross country coach position at Erie High School (Colorado) for the 2023 season[6]