WMO World Muay Thai Organization, WMBF World Muay Boran Federation, which all affliated with Kru Muaythai Association register under Ministry of Culture Thailand, and Muaythai Prajawsuea Sport Association (MPSA), registered under Sport Authority of Thailand. (SAT) THIS THE GROUP OF THE MOST ACTIVE RECOGNIZED AS OFFICIAL BODY THAT PROMOTE MUAYTHAI BORAN THROUGHOUT THE WORLD .