WBO Title Backgrounds
Heavyweight Championship
First Champion: Francesco Damiani - May 6, 1989
Final Champion: Still Active
Junior Heavyweight Championship
First Champion: Boone Pultz - December 3, 1989
Final Champion: Still Active
Light Heavyweight Championship
First Champion: Michael Moorer - December 3, 1988
Final Champion: Still Active
Super Middleweight Championship
First Champion: Thomas Hearns - November 4, 1988
Final Champion: Still Active
Middleweight Championship
First Champion: Doug DeWitt - April 18, 1989
Final Champion: Still Active
Junior Middleweight Championship
First Champion: John David Jackson - December 8, 1988
Final Champion: Still Active
Welterweight Championship
First Champion: Genaro Leon - May 6, 1989
Final Champion: Still Active
Junior Welterweight Championship
First Champion: Héctor Camacho - March 6, 1989
Final Champion: Still Active
Lightweight Championship
First Champion: Mauricio Aceves - May 6, 1989
Final Champion: Still Active
Junior Lightweight Championship
First Champion: John John Molina - April 29, 1989
Final Champion: Still Active
Featherweight Championship
First Champion: Maurizio Stecca - January 28, 1989
Final Champion: Still Active
Junior Featherweight Championship
First Champion: Kenny Mitchell - April 29, 1989
Final Champion: Still Active
Bantamweight Championship
First Champion: Israel Contreras - February 3, 1989
Final Champion: Still Active
Junior Bantamweight Championship
First Champion: José Ruiz - April 29, 1989
Final Champion: Still Active
Flyweight Championship
First Champion: Elvis Álvarez - March 3, 1989
Final Champion: Still Active
Light Flyweight Championship
First Champion: Jose De Jesús - May 19, 1989
Final Champion: Still Active
Minimumweight Championship
First Champion: Rafael Torres - August 30, 1989
Final Champion: Still Active
WBO Women's Titles
Super Middleweight Championship
ONLY Champion: Christina Hammer - May 4, 2013
Middleweight Championship
First Champion: Christina Hammer - October 23, 2010
Final Champion: Still Active
Junior Middleweight Championship
First Champion: Hanna Gabriel - May 29, 2010
Final Champion: Still Active
Welterweight Championship
First Champion: Hanna Gabriel - December 19, 2009
Final Champion: Still Active
Junior Welterweight Championship
First Champion: Fernanda Soledad Alegre - December 4, 2010
Final Champion: Still Active
Lightweight Championship
First Champion: Erin McGowan - October 9, 2010
Final Champion: Still Active
Junior Lightweight Championship
First Champion: Ramona Kuehne - June 4, 2010
Final Champion: Still Active
Featherweight Championship
First Champion: Ina Menzer - October 10, 2009
Final Champion: Still Active
Junior Featherweight Championship
First Champion: Ana Julaton - December 4, 2009
Final Champion: Still Active
Bantamweight Championship
First Champion: Kaliesha West - September 18, 2010
Final Champion: Still Active
Junior Bantamweight Championship
First Champion: Carolina Raquel Duer - December 17, 2010
Final Champion: Still Active
Flyweight Championship
First Champion: Susi Kentikian October 10, 2009
Final Champion: Yésica Yolanda Bopp - April 26, 2014
Junior Flyweight Championship
First Champion: Yésica Yolanda Bopp - November 6, 2009
Final Champion: Still Active
Mini-Flyweight Championship
First Champion: Teeraporn Pannimit - April 2, 2010
Final Champion: Still Active
Atomweight Championship
First Champion: Nao Ikeyama - May 17, 2014
Final Champion: Still Active