Maurice Greene was born in Kansas City, Kansas and attended FL Schlagle High School. In his youth and high school, he participated in both football and track and field, but eventually proved to be best in the latter.

In 1995 he took part in his first major international tournament at the World Championships in Gothenburg, but was eliminated in the 100 m quarter-finals. His next season was disappointing, as he failed to make the American team for the 1996 Summer Olympics in Atlanta.

However, the following season would be his breakthrough. At the World Championships in Athens, Greene won the 100 m title. This marked the beginning of Greene's dominance in the 100 m. He successfully defended his title in 1999 and 2001 and captured the Olympic gold medal in the 2000 Olympics. He was also successful at the 200 m. At the 1999 World Championships, he also won the 200 m title, the first to win both sprint events at a World Championships. However, he did not run the 200 m at the 2000 Olympics after an injury at the US trials.

In 1999 he set the 100 m world record at 9.79 s (+0.1 m/s wind), beating Donovan Bailey's standing world record of 9.84 s (+0.7 m/s wind), and lowering the world record by the largest margin since the advent of electronic timing. Greene also matched Donovan Bailey's 50 m indoor world record but was never ratified as a world record. He also set the 60 m indoor world record twice. His 60 m indoor record is currently at 6.39 s. Both records still stand. In addition, Maurice Greene is the only sprinter to hold the 60 m and 100 m world records at the same time.

In 2002, Greene lost his 100 m world record to fellow American Tim Montgomery, who beat his time by 0.01 (9.78 s +2.0 m/s), while Greene himself was injured and watched the race from the stands. Montgomery has since been found guilty of using performance enhancing drugs, and his record has been retroactively disqualified. The record was broken legitimately by Asafa Powell in 2005 with a time of 9.77 s (+1.6 m/s wind).

At the 2004 Summer Olympics in Athens, Greene added to his medal tally with the bronze after finishing third in his attempt to defend his 100 m title, and a silver as the anchor leg runner on the United States 4x100 m relay team, narrowly denied another Olympic Gold by the British team, who won by 0.01 seconds.

Greene has run 52 sub-10 second 100 m races during his career, more than any other sprinter in history. World record holder Asafa Powell is a distant second with 33. [1]. Previously Greene had held the record for the most wind-legal sub-10 second clockings for 100 m in one season, when he ran 9 sub-10's in 1999. This record was also broken by Asafa Powell in 2006.

On December 21, 2006, he appeared as one of the, "strangers," on the NBC game show Identity. Ironically, the contestant, who is a self-proclaimed track and field fan, incorrectly identified him by name as, Marion Jones, although she correctly identified him as the "world's fastest man" (his identity description).

Greene also appeared on the TV reality show Blind Date.[1]

Greene is currently dating Claudia Jordan who holds case #1 on Deal Or No Deal.