The Thai Boxing Association of the U.S.A. (TBA-USA), the oldest and largest Muay Thai organization in the United States, was founded in 1968 by Ajarn Surachai "Chai" Sirisute.  (Ajarn is Thai for head instructor.)  

Ajarn Chai came to the United States with a vision to spread Muay Thai to throughout the world, and he is the first-ever Thai boxing instructor to teach Americans this art and he has worked tirelessly for over 40 years to that end.  We are indeed grateful to Ajarn Chai for his gift of the knowledge of Muay Thai.  

The TBA-USA now has representation in almost every state in the USA and has expanded to establish affiliate organizations in more than 15 countries around the world. Ajarn Chai continues to promote Muay Thai to this day !