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

He won a bronze medal in the 4 x 400 metres relay at the 2005 Central American and Caribbean Championships.

[2] 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.

This biographical article relating to Cuban athletics is a stub.