Carlos De León, also known as "Sugar" De Leon, was a Puerto Rican boxer who made history by becoming the first cruiserweight to win the world title twice. Subsequently, he kept breaking his own record for the most times as cruiserweight champion by regaining the title on two further occasions.
Leon Spinks was an American professional boxer who competed from 1977 to 1995. In only his eighth professional fight, he won the undisputed heavyweight championship in 1978 after defeating Muhammad Ali in a split decision, in what is considered one of the biggest upsets in boxing history. Spinks was later stripped of the WBC title for facing Ali in an unapproved rematch seven months later, which he lost by a unanimous decision.
Marvin Camel is an American former professional boxer who competed from 1974 to 1990. He was the first cruiserweight world champion, having held the WBC title in 1980 and the IBF title from 1983 to 1984.
Dwight Muhammad Qawi is an American former professional boxer who competed from 1978 to 1998. He was a world champion in two weight classes, having held the WBC and Ring magazine light heavyweight titles from 1981 to 1983, and the WBA cruiserweight title from 1985 to 1986. Qawi was inducted into the International Boxing Hall of Fame in 2004.
Jean-Marc Gilbert Mormeck 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.
Super cruiserweight, is a weight class in combat sports.
Tomasz "Tomek" Adamek is a Polish former professional boxer who competed from 1999 to 2018. He held world championships in two weight classes, including the WBC light heavyweight title from 2005 to 2007, and the IBF and The Ring magazine cruiserweight titles from 2008 to 2009. He also held the IBO cruiserweight title in 2007, and challenged once for the WBC heavyweight title in 2011. BoxRec ranks Adamek as the third greatest Polish boxer of all time, pound for pound. He is the first Polish boxer to win The Ring title.
Dennis Andries MBE is a British former professional boxer who fought at light heavyweight.
Krzysztof Włodarczyk is a Polish professional boxer. He is a two-time former cruiserweight world champion, having held the International Boxing Federation (IBF) title from 2006 to 2007 and the World Boxing Council (WBC) title from 2010 to 2014.
David "Bomber" Pearce was a Welsh heavyweight boxing champion.
Marcelo Fabián Domínguez is an Argentine professional boxer. A world champion and four-time world title challenger at cruiserweight, he held the WBC world cruiserweight title from 1996 until 1998. He originally won the interim WBC belt in 1995, having been promoted after his second defense of the belt that same year.
Massimiliano Duran is an Italian former professional boxer who competed from 1986 to 1994. He held the WBC cruiserweight title from 1990 to 1991 and the European cruiserweight title from 1993 to 1994. He is also known for being the only fighter in boxing history to earn a shot at, win, and defend a world title with three consecutive disqualification wins.
S.T. Gordon is an American former professional boxer who held the WBC and Lineal cruiserweight titles from 1982 to 1983.
Alfonso Ratliff is an American former professional boxer who competed from 1980 to 1989, holding the WBC and The Ring cruiserweight titles in 1985. He was later coaching at the Harvey Boxing Club in Harvey IL.
Grigory Anatolyevich Drozd is a Russian former professional boxer. He held the World Boxing Council (WBC) cruiserweight title from 2014 to 2016, and the European cruiserweight title from 2013 to 2014.
Álvaro López, known as Yaqui López is a former Mexican boxer and current member of the Boxing Hall of Fame. A native of Zacatecas, López is considered by many as one of the greatest Light Heavyweights to never become world champion.
Mairis Briedis is a Latvian former professional boxer who competed from 2009 to 2024. He was a three-time cruiserweight world champion, having held the IBF and Ring titles from 2020 to 2022; the WBC title from 2017 to 2018; and the WBO title in 2019. Upon winning the WBC title in 2017, he became the first Latvian to hold a world boxing title. He was awarded the Order of the Three Stars in 2017.
Thabiso Mchunu is a South African professional boxer. He has challenged twice for a world title; first in 2016 for the WBO cruiserweight title. In 2022, he challenged for the WBC cruiserweight title. As of August, 2022, Mchunu is ranked as the world's fifth best cruiserweight according to The Ring, BoxRec and TBRB.
Norair Mikaelian, better known as Noel Gevor Mikaelian, is an Armenian-German professional boxer who is the current WBC cruiserweight world champion, holding the title since November 2023. He is the stepson of former European middleweight champion Khoren Gevor.
Richard Boone Pultz is an American former professional boxer who won the WBO Cruiserweight title in December 1989.
Jim Huffman
Pierre Coetzer 
Carlos De León