Javier Culson Pérez (born July 25, 1984) is a Puerto Rican athlete who specialises in the 400 metre hurdles. He currently holds the record as "the world's fastest man" in that category. Culson is competing in the 2012 Olympics in London.
Michael Johnson still holds the world record in the 200 metres, 400 metres and 4 x 400 metres relay. He won five Olympic gold medals and was crowned world champion nine times. He is the only male sprint athlete in history to win both the 200 metres and 400 metres events at the same Olympics.