This list of taekwondo grandmasters includes notable persons who have been recognized as grandmasters of the Korean martial art of taekwondo. There is no single, universally-recognized set of criteria to define a taekwondo grandmaster; different organizations and different styles have their own rules. Those listed below are grouped by system: Kukkiwon (widely known as the World Taekwondo Headquarters), International Taekwon-Do Federation (ITF), and other systems (which includes some persons receiving ranks from taekwondo organizations that predate the other two systems, e.g., the original Korea Taekwondo Association (KTA)) and UWTA.