The World Tae Kwon Do Federation (WTF) is the international governing body for Tae Kwon Do. It is headquartered at the Kukkiwon, the national training center for Tae Kwon Do, in Seoul, South Korea. Its members include 20 million people in 120 countries.
The WTF oversees international competition , sets standards for master instructors and referee certification, and has several committees responsible for the reviewing, updating, and advancement of Tae Kwon Do's technical standards.
Black belts earned at Tiger Kim's World Class Tae Kwon Do are certified through the WTF and are recognized worldwide.