William Collazo

William Collazo Gutiérrez (born 31 August 1986 in Antilla, Holguín) is a Cuban sprinter who specializes in the 400 metres.

Career
He won a bronze medal in the 4 x 400 metres relay at the 2005 Central American and Caribbean Championships. He also competed at the 2007 World Championships, the 2008 Olympic Games and the 2009 World Championships, but without reaching the final round.

His personal best time is 44.93 seconds, achieved at the World Championships in August 2009 in Berlin. He also has 21.27 seconds in the 200 metres, achieved in March 2004 in Havana.

Personal best

 * 200 m: 21.04 s (wind: +0.7 m/s) – 🇨🇺 La Habana, 23 May 2010
 * 400 m: 44.93 s – 🇩🇪 Berlin, 19 August 2009
 * 400 m (indoor): 46.31 s – 🇶🇦 Doha, 13 March 2010

International competitions
1: Did not finish in the final.