IBBF

The International Black Belt Federation (IBBF) is comprised of students, students' students, etc. of Grand Master Moo Yong Yun; since his semi-retirement, the Federation has strove to continue Grand Master Yun's martial-arts legacy.

The IBBF is one of the largest and fastest-growing WTF-certified organizations in the United States, with member schools in states from Florida to Washington, including North Dakota, South Dakota, Minnesota, Wisconsin and Iowa.