Enzo Maccarinelli is a Welsh former professional boxer who competed from 1999 to 2016. He held the WBO cruiserweight title from 2006 to 2008, and the European and British cruiserweight titles between 2010 and 2012.
Jeremy Williams is an American former professional boxer and mixed martial artist. He challenged once for the WBO heavyweight title in 1996.
Derrick Lavon Jefferson is an American former professional boxer. He challenged once for the WBO title in 2001, and is perhaps best remembered for his brutal left hook-knockout of Maurice Harris in 1999.
Anthony Tyrone "Tony" Thompson is an American professional boxer. He has challenged twice for unified world heavyweight titles, in 2008 and 2012, both times against Wladimir Klitschko. Described by many observers and fighters as "awkward", Thompson was considered the gatekeeper of the heavyweight division during the Klitschko Era. Thompson was ranked by BoxRec among ten best heavyweights in the world from 2003 to 2012, reaching his highest ranking of world No.4 in 2005 and 2006.
Orlin Levance Norris is an American former professional boxer who competed from 1986 to 2005. He held the WBA cruiserweight title from 1993 to 1995. As an amateur, he won the National Golden Gloves title. He is the brother of retired former champion Terry Norris.
Brian Matthew Minto is an American former professional boxer who competed from 2002 to 2016. He challenged once for the WBO cruiserweight title in 2010. During his career he faced former world champions and contenders Dillian Whyte, Joseph Parker, Axel Schulz, Luan Krasniqi, Chris Arreola, Marco Huck, Shane Cameron, Tony Tubbs, and Artur Szpilka. He also faced Israel Adesanya, who later on became the UFC Middleweight Champion, losing to him by split-decision.
Chazz Witherspoon is an American professional boxer. The second cousin of former boxing champion Tim Witherspoon, he emerged as a talented boxer in the 2000s. He won the 2004 National Golden Gloves finals in Kansas City, Missouri, and by collecting all wins via stoppage, he became the first man in the history of the Golden Gloves to win the National Title by all stoppages.
Steven Ormain Cunningham is an American professional boxer who held the IBF cruiserweight title twice between 2007 and 2011. His nickname, "USS", is a reference to his US Navy service on the aircraft carriers USS America and USS Enterprise between 1994 and 1998.
Michael Marrone is an American professional boxer. He challenged for the WBA cruiserweight title in 2011.
Muamer Hukić, best known as Marco Huck, is a German professional boxer. He held the WBO cruiserweight title from 2009 to 2015, and is the joint-longest reigning cruiserweight world champion of all time, having made thirteen consecutive successful defenses, a division record shared with Johnny Nelson. Huck also held the IBO cruiserweight title from 2016 to 2017, the European cruiserweight title from 2008 to 2009, and has challenged once for the WBA (Regular) heavyweight title in 2012.
Francesco Pianeta is an Italian former professional boxer who competed from 2005 to 2018. He challenged for the unified WBA (Super), IBF, WBO and The Ring heavyweight championship in 2013 and the WBA (Regular) title in 2015. At regional level held the European Union heavyweight title from 2008 to 2009.
Oleksandr Oleksandrovych Usyk is a Ukrainian professional boxer. He is a world champion in two weight classes, having held the unified WBA (Super), IBF, WBO and IBO heavyweight titles since defeating Anthony Joshua in September 2021; and the undisputed cruiserweight title from 2018 to 2019, being the first cruiserweight champion to hold all four major world titles. He is widely regarded as one of the greatest Ukrainian boxers of all time. With his victory over Joshua, Usyk became one of only three boxers to have unified the cruiserweight world titles and become a world heavyweight champion, joining Evander Holyfield and David Haye.
Olawale O. "Ola" Afolabi is a British professional boxer. He is a two-time former WBO interim cruiserweight champion, as well as a two-time former IBO cruiserweight champion. Nicknamed "Kryptonite", Afolabi was known in the ring for his slickness, counterpunching skills and durability. Born to Nigerian parents, Afolabi resides in California, where he also trained for the most of his career.
Victor Emilio Ramírez is an Argentine former professional boxer. He held the WBO cruiserweight title in 2009 and the IBF cruiserweight from 2015 to 2016. Ramírez announced his retirement in December 2016. He fought once at heavyweight in December 2017.
Ruediger May is a prolific German cruiserweight boxer known for his stinging jab. He challenged once for the WBO world cruiserweight title in 2004.
Jai Opetaia is an Australian professional boxer who has held the WBA Oceania cruiserweight title since 2019. As an amateur he won a bronze medal at the 2012 Youth World Championships and represented Australia at the 2012 Olympics and 2014 Commonwealth Games.
Krzysztof Głowacki is a Polish professional boxer who has held the WBO cruiserweight title twice; from 2015 to 2016 and again in 2019. As an amateur, he won a bronze medal in the super-heavyweight division at the 2008 EU Championships. As of June 2020, he is ranked as the world's fourth best active cruiserweight by The Ring magazine and third by the Transnational Boxing Rankings Board and BoxRec.
Mairis Briedis is a Latvian professional boxer. He is a three-time cruiserweight world champion, having held the IBF and Ring titles since September 2020; 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. As a professional, he has fought world champions Oleksander Usyk, Marco Huck, Krzysztof Głowacki, Manuel Charr, and Yuniel Dorticos. As of October 2021, he is ranked as the world's best active cruiserweight by BoxRec, The Ring magazine and the Transnational Boxing Rankings Board, as well as the eighth-best active boxer, pound for pound, by BoxRec.
Demetrice King is an American former professional boxer who competed from 2003 to 2011. He faced then IBU heavyweight champion and future WBO heavyweight champion Shannon Briggs at Madison Square Garden in March 2005. He knocked Briggs down three times during the fight, but eventually was stopped via TKO. Briggs was the first and only professional boxer to actually stop King. After the bout, he suffered a series of defeats, facing, among others, Chazz Witherspoon, Derric Rossy, and Kevin Johnson. After his defeat to Johnson, he had a winning streak of 5 wins, defeating, among others, future WBC heavyweight champion Bermane Stiverne.
Junior Anthony Wright Jr. is an American professional boxer who challenged for the WBA cruiserweight title in 2016. As an amateur, he was a three-time Chicago Golden Gloves champion and also fought in the National Golden Gloves tournament.
Marco Huck 
Harvey Jolly