The Chuck Norris System (CNS) is a Korean-based American hard style of karate.  The style was founded by Mr. Chuck Norris, and was originally based on Mr. Norris' Tang Soo Do training in Korea while he was in the military.  During his unprecedented competitive fighting career (undefeated world middleweight karate champion six years running), Mr. Norris began to evolve the style to make it more effective and well-rounded.  He did this through committed study of other systems which he felt would complement his Tang Soo Do foundation.  This evolution, along with his personal commitment to excellence, resulted in his phenomenal success.  This openness continues today, as the Chuck Norris System continues to evolve to include aspects of other systems, or completely original aspects which make it more complete. 

Having gone by several names since the early 70's, including the Chuck Norris System, the style was known as Chun Kuk Do from 1990 - 2015. In July 2015, at the annual UFAF International Training Conference (ITC) in Las Vegas, Mr. Norris and the board of directors announced to the membership that we would once again be able to return to using Mr. Norris' name and the Chuck Norris System was reborn,