Diego "Chico" Corrales Jr. (August 25, 1977 – May 7, 2007) was an American professional boxer who competed from 1996 to 2007. He was a multiple-time world champion in two weight divisions, having held the IBF super featherweight title from 1999 to 2000; the WBO super featherweight title in 2004; the WBO lightweight title from 2004 to 2006; and the WBC, Ring magazine, and lineal lightweight titles from 2005 to 2006. In 2005, Corrales received Fight of the Year honors by The Ring and the Boxing Writers Association of America for his acclaimed first bout with José Luis Castillo.