WAbsolute Championship Akhmat
WBellator Kickboxing
WColosseum Tournament
WDynamite Fighting Show
WGlory (kickboxing)
WGolden Fighter Championship
WInternational Sport Karate Association
WIt's Showtime (kickboxing)
WItalian Kickboxing Muay Thai Savate Shoot Boxe Federation
WK-1
WKarate International Council of Kickboxing
WKing of Kings (kickboxing)
WKunlun Fight
WONE Championship
WOSS Fighters
WPrison Fight
WStrikeforce (mixed martial arts)
WWorld Kickboxing Association
WWorld Association of Kickboxing Organizations
WWorld Combat League
WWorld Kickboxing Network
WWorld Lethwei Championship