Han Bong-Soo (August 25, 1933 – January 8, 2007), also known as Bong Soo Han, was a martial arts instructor, author, the founder of the International Hapkido Federation, and one of the foremost practitioners of hapkido through his participation in books, magazine articles, and popular films featuring this Korean martial art (Billy Jack series). He is often referred to as the "Father of Hapkido" in America.