The ATA is the founding organization of other international affiliates that include the World Traditional Taekwondo Union (WTTU) and the Songahm Taekwondo Federation (STF). These branches include some 16 countries, offering instruction to more than 30,000 students.

The World Traditional Taekwondo Union (WTTU) was founded by Grand Master H.U. Lee in the fall of 1990. The WTTU is a branch of the Songahm Taekwondo family that also consists of the American Taekwondo Association (ATA) and the Songahm Taekwondo Federation (STF). The ATA encompasses member schools in the United States and the STF includes member schools in South America. The WTTU covers the remaining portion of the world.

The vision of Grand Master Lee for this organization is to unite martial artists worldwide in an organization that emphasizes "Traditional Values," while utilizing the most advanced concepts and philosophies in the classroom and in business. The WTTU allows the instructor to focus more clearly in all four areas of the martial arts business with proven programs in marketing, sales, instruction, and business management.

Through the early years of the ATA, the Chang Hun style of forms (used by the International Taekwondo Federation) was used as part of the curriculum. Even though this style was widely accepted in the Taekwondo community, Grand Master Lee knew that these forms were strongly influenced by the Japanese style of martial arts and did not truly reflect Taekwondo or the strength and beauty of its kicking techniques. After much research and input from association seniors, Grand Master Lee introduced the Songahm style of Taekwondo to the world.

At this time, the WTTU has schools in Canada, England, Portugal, Germany, South Africa, Guam, Japan, Sweden, and South Korea. Growth in the WTTU has been consistent and rapid since its inception.

Grand Master Lee knows that school and club owners from all over the world are looking for communication, support, and education. There are several methods that Grand Master Lee uses to provide these services. Members of the ATA/WTTU/STF staff have travelled extensively around the globe to provide training in all areas. Each year, Grand Master Lee hosts the Songahm Taekwondo World Championships. This week long event provides training in Songahm Taekwondo, instructional methods, and business practices. The official WTTU magazine is "The Way of Traditional Taekwondo." This gives the WTTU an excellent vehicle to communicate, exchange ideas, and to announce new programs, services, seminars, and events, as the magazine has done for ATA/STF members for more than 12 years. This website is another method that Grand Master Lee wants to use to keep in consistent contact with current WTTU members as well as encouraging communication with prospective members.

Grand Master Haeng Ung Lee was born on July 20, 1936 in Manchuria, China. One of the original pioneers that brought martial arts to America, he founded the American Taekwondo Association, the World Traditional Taekwondo Union, and Songahm Taekwondo Federation, which presides over 250,000 members worldwide including schools in South America, Africa, Europe, Asia, and the United States. The students of Grand Master Lee include over 14,000 black belts and over 3,000 certified instructors in more than 900 schools and clubs in the U.S. alone. He strived to make the world a better place by teaching the values of life through martial arts. Grand Master Lee passed away on October 5, 2000 after a hard fought battle with cancer. He left his legacy to the hundreds of thousands of students across the world.