WALA Promotions
WGolden Boy Promotions
WIndian Professional Boxing Association
WInternational Boxing Association (professional)
WInternational Boxing Federation
WInternational Boxing Organization
WKlitschko brothers
WLonsdale Belt
WNational Sporting Club
WNew Zealand Professional Boxing Association
WNorth American Boxing Council
WPro Box NZ
WTransnational Boxing Rankings Board
WWorld Boxing Association
WWorld Boxing Council
WWorld Boxing Organization