The World Boxing Organization (WBO) is an organization which sanctions professional boxing bouts. It is recognized by the International Boxing Hall of Fame (IBHOF) as one of the four major world championship groups, alongside the World Boxing Association (WBA), World Boxing Council (WBC), and International Boxing Federation (IBF). The WBO's headquarters are located in San Juan, Puerto Rico.
Osvaldo "Ossie" Ocasio is a Puerto Rican former boxer who held the World Cruiserweight Championship from 1982 to 1984. He was also a Top Contender and Heavyweight Challenger in 1979. He scored notable wins against Former Cruiserweight Champion Dwight Muhammad Qawi as well as beating Top Heavyweight Contender Jimmy Young and Heavyweight Contender Pierre Coetzer, as well as drawing with Future Heavyweight Champion Michael Dokes. Nicknamed "Jaws", his peculiar nickname was the result of him accidentally biting another boxer during a sparring session.
Evander Holyfield is an American former professional boxer who competed between 1984 and 2011. He reigned as the undisputed champion at cruiserweight in the late 1980s and at heavyweight in the early 1990s, and was the only boxer in history to win the undisputed championship in two weight classes in the "three belt era", a feat later surpassed by Terence Crawford, Naoya Inoue and Oleksandr Usyk, who became two-weight undisputed champions in the four-belt era. Nicknamed "the Real Deal", Holyfield is the only four-time world heavyweight champion, having held the unified WBA, WBC, and IBF titles from 1990 to 1992, the WBA and IBF titles again from 1993 to 1994, the WBA title a third time from 1996 to 1999; the IBF title a third time from 1997 to 1999 and the WBA title for a fourth time from 2000 to 2001.
Michael Lee Moorer is an American former professional boxer who competed from 1988 to 2008. He won a world championship on four occasions in two weight classes, having held the WBO light heavyweight title from 1988 to 1991; compiling 22 straight KOs in 22 fights and the WBO heavyweight title from 1992 to 1993; the unified WBA, IBF and lineal heavyweight titles in 1994; and regained the IBF heavyweight title again from 1996 to 1997 becoming a three-time heavyweight world champion.
Michael Dwayne Weaver is an American former professional boxer who competed from 1972 to 2000, and held the WBA heavyweight title from 1980 to 1982. He is widely regarded as one of the Best Heavyweight Boxers of the 1980s beating Heavyweight Champions such as Gerrie Coetzee and John Tate.
James Nathaniel Toney is an American former professional boxer who competed from 1988 to 2017. He held multiple world championships in three weight classes, including the International Boxing Federation (IBF) and lineal middleweight titles from 1991 to 1993, the IBF super middleweight title from 1993 to 1994, and the IBF cruiserweight title in 2003. Toney also challenged twice for a world heavyweight title in 2005 and 2006, and was victorious the first time but was later stripped due to a failed drug test. Overall, he competed in fifteen world title fights across four weight classes.
Jesse Ferguson is a retired American boxer who was a Heavyweight Title Challenger and Top Contender who Beat Undisputed Heavyweight World Champion Buster Douglas, Heavyweight World Champion Ray Mercer and Cruiserweight World Champion Tyrone Booze. His professional career is filled with matches with champions and contenders and his name is linked with numerous boxing stars of the 1980s and 1990s.
Virgil Eugene Hill is an American former professional boxer who competed from 1984 to 2007, and in 2015. He is a two-weight world champion, having held the WBA light heavyweight title twice, from 1987 to 1997; the IBF and lineal light heavyweight titles from 1996 to 1997; and the WBA cruiserweight title twice, from 2000 to 2002 and 2006 to 2007. As an amateur, Hill won a silver medal in the middleweight division at the 1984 Summer Olympics. In 2013, he was inducted into the International Boxing Hall of Fame.
Michael Dokes vs. Gerrie Coetzee, billed as "The Buckeye Homecoming", was a professional boxing match that took place on September 23, 1983, at the Richfield Coliseum in Richfield Township, Ohio, United States for Dokes' WBA heavyweight title.
Greg Page was an American professional boxer who competed from 1979 to 2001, and held the WBA heavyweight title from 1984 to 1985. He was also a regular sparring partner for Mike Tyson, famously knocking down the then-undefeated world champion during a 1990 session.
Alfred Rudolph Cole, best known as Al Cole, is an American former professional boxer. He won the IBF cruiserweight title and was a major force in the division until moving up to heavyweight, where he had less success. In 2001, Cole portrayed boxer Ernie Terrell in the film Ali.
Saúl "La Cobra" Montana is a Mexican former professional boxer. Montana is the former IBA, NABA, WBC Mundo Hispano, WBC Continental Americas Champion at Cruiserweight, NBA, and Mexican National Champion at Heavyweight. He also challenged once for the IBF cruiserweight title in 2000.
Yoan Pablo Hernández Suárez is a Cuban-German professional boxer. He is a former unified cruiserweight world champion, having held the IBF and Ring magazine titles between 2011 and 2015, as well as the WBA interim cruiserweight title in 2011. He is the half-brother of Yoel Romero, a freestyle wrestler and mixed martial artist.
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.
Johnny du Plooy was a former South African heavyweight boxer best known for his win over former WBA World Heavyweight champion Mike Weaver. He challenged once for the WBO World Heavyweight title in 1989.
James Broad was an American heavyweight boxer who was a Notable Contender throughout the 1980s, who beat Future World Champion James Smith and gave Heavyweight Champion Greg Page a very tough fight only losing by Majority Decision. He won the NABF heavyweight title and was a regular sparring partner of a peak Mike Tyson. He fought the likes of James Smith, Razor Ruddock, Tony Tucker, Tim Witherspoon, Johnny du Plooy, Francesco Damiani, and Greg Page.
Pierre Coetzer is a former heavyweight boxer from Pretoria, South Africa. Coetzer's most notable fights include those against Johnny du Plooy, Riddick Bowe, Frank Bruno, and George Foreman.
David Bey was a heavyweight boxer who held the USBA title. He unsuccessfully challenged Larry Holmes for the heavyweight title in 1985.
Ernest Mateen, nicknamed 'M-16', was a United States and IBU Cruiserweight (boxing) champion. He was shot to death by his wife in a case of probable self-defense.
The Michael Dokes vs. Mike Weaver or, alternately, Mike Weaver vs. Michael Dokes, boxing fights were a pair of fights that occurred in 1982 and 1983 and were for the World Boxing Association's world Heavyweight title. Both fights were considered controversial due to a separate set of situations. They are both among the most widely spoken about heavyweight boxing contests of the 1980s.
Darroll Wilson 
Vineland, New Jersey, U.S.
Wladimir Klitschko 
Aachen, Germany
Kansas City, Missouri, U.S.
Brian Nielsen (boxer) 
Corrie Sanders 
Albuquerque, New Mexico, U.S.
Louisville, Kentucky, U.S.
Zeljko Mavrovic 
Chicago, Illinois, U.S.
Caldwell, Idaho, U.S.
Herbie Hide 
Ringgold Township, Pennsylvania, U.S.
Bercy, France
Salemi, Italy
Siza Makathini
Saint Petersburg, Florida, U.S.
Biloxi, Mississippi, U.S.
Ladislao Mijangos
Sun City, Bophuthatswana 
New York City, U.S.
Houston, Texas, U.S.
Las Vegas, Nevada, U.S.
Atlanta, Georgia, U.S.