Chun Kuk Do

The name was Chun Kuk Do from 1990 until July 2015. In July 2015 it was renamed Chuck Norris System.

Chun Kuk Do (Hangul: 천국도; Hanja: 天國道, commonly abbreviated as CKD) is a martial art (or type of fighting style) that Chuck Norris created. It is said to be based upon Tang Soo Do, another martial art.