Maurice Greene (born July 23, 1974) is an American former track and field sprinter who specialized in the 100 meters and 200 meters.
He is a former 100 m world record holder with a time of 9.79 seconds.
During the height of his career (1997–2004) he won four Olympic medals and was a five-time World Champion.
This included three golds at the 1999 World Championships, a feat which had previously only been achieved by Carl Lewis and Michael Johnson and has since been equaled by three others.
His career was affected by a number of injuries from 2001 onwards, although he won the 100 meters bronze and silver in the sprint relay at the 2004 Summer Olympics.
Greene was also successful indoors: he was the 1999 Indoor World Champion, was the world record holder in the 60-meter dash for nearly 20 years and remains the joint-fastest man over 50 meters.
He raced sparingly after an injury in 2005 and officially retired in 2008.
Over his career, he made the fourth most sub-10-second runs (51) in the 100m, only surpassed by Asafa Powell, Justin Gatlin and Usain Bolt.
Following his track career he has become an ambassador for the IAAF and a TV personality, appearing on Identity, Blind Date, and Dancing with the Stars.
Most recently he volunteered as a track coach at University of California at Los Angeles (UCLA) for the 2012–2013 season.