Usain Bolt is an athlete.
Usain St Leo Bolt , OJ , CD ( [ ˈjuːseɪn ] born 21 August 1986 ) is a Jamaican sprinter . Due to his unprecedented dominance and achievements in sprint competition , he is widely considered to be the greatest sprinter of all time . He is the most successful athlete of the World Championships and was the first athlete to win three titles in both the 100 m and 200 m at the competition .