World cruiserweight boxing champions

Jean-Marc Gilbert Mormeck (born 3 June 1972) is a French former professional boxer who competed from 1995 to 2014. He is a two-time unified world cruiserweight champion, having held the WBA, WBC and The Ring world titles twice between 2005 and 2007. He was the first boxer to hold unified cruiserweight title since Evander Holyfield in 1988, and the first fighter to hold The Ring cruiserweight title since Carlos De León in 1987. He was ranked by BoxRec as the world's top 10 cruiserweight from 2001 to 2005 and in 2007, and was ranked No.1 in 2003 and 2004. Mormeck also challenged for the unified world heavyweight title in 2012.

Fabrice Tiozzo (born May 8, 1969) is a French former professional boxer who competed from 1988 to 2006. He is a world champion in two weight classes, having held the WBC light-heavyweight title from 1995 to 1997, the WBA cruiserweight title from 1997 to 2000, and the WBA light-heavyweight title from 2004 to 2006. He is the younger brother of former super middleweight world champion of boxing, Christophe Tiozzo.