Sensei Dang Thong Phong (1935–2025) devoted more than seven decades of his life to the study, teaching, and preservation of the martial arts. His journey began in 1950 in Saigon, Vietnam, where he trained in Han Bai Duong Vietnamese Shaolin Kung-fu and Judo before continuing his studies in Aikido and Taekwondo. Through relentless dedication, discipline, and an unwavering desire to learn, he became one of Vietnam's most respected martial artists and instructors.
His pursuit of excellence eventually led him to Japan, where he trained at the Aikikai World Headquarters in Tokyo, deepening his understanding of Aikido under the guidance of the art's founding lineage. Throughout his career, Sensei Phong earned advanced black belt rankings in multiple martial arts, including Aikido, Taekwondo, Judo, and Vietnamese Shaolin Kung-fu. More importantly, he embraced the philosophy that martial arts exist not only to develop physical skill, but to cultivate character, compassion, humility, and inner peace.
In 1968, after receiving the trust and authorization of O-Sensei Morihei Ueshiba, the founder of Aikido, Sensei Phong established the Tenshinkai Aikido Federation in Vietnam. The name Tenshinkai—meaning "Organization of Heavenly Hearts"—reflected the ideals upon which the organization was founded: respect, harmony, compassion, and the pursuit of peace through martial arts.
As President of Tenshinkai, Sensei Phong worked tirelessly to introduce Aikido throughout Vietnam. He developed training programs for military academies, universities, and schools while also serving in leadership positions within Vietnam's Judo and Taekwondo federations. His influence helped shape an entire generation of martial artists, educators, and instructors.
The fall of South Vietnam in 1975 dramatically changed the course of Sensei Phong's life. As an officer in the Republic of Vietnam Armed Forces, he was imprisoned in Communist re-education camps, where he endured more than seven years of captivity. Following his release, he made numerous attempts to escape Vietnam, enduring repeated arrests, imprisonment, and unimaginable hardship.
After seventeen unsuccessful attempts, Sensei Phong finally reached freedom on his eighteenth attempt, arriving in the United States on February 26, 1986. His remarkable perseverance remains one of the defining chapters of his life and serves as an enduring example of courage, resilience, and unwavering determination.
Although he had left his homeland behind, Sensei Phong never abandoned the mission entrusted to him by O-Sensei Morihei Ueshiba—to spread Aikido in the spirit of love and peace.
In 1988, he founded Westminster Aikikai, the headquarters of the Tenshinkai Aikido Federation in Westminster, California, where generations of students would come to learn not only martial techniques but also the values that define true budo: humility, respect, discipline, perseverance, and service to others.
His teachings extended far beyond Southern California. Over the following decades, Sensei Phong conducted seminars throughout the United States, Europe, and Vietnam, sharing his knowledge with martial artists from around the world. In recognition of his lifelong contributions, he received numerous honors, including induction into the World Martial Arts Hall of Fame and promotion to 6th Dan—and later 7th Dan—in Aikido by the Aikikai Foundation, Aikido World Headquarters in Tokyo, Japan.
Sensei Dang Thong Phong passed away in December 2025 at the age of 90, leaving behind a legacy that cannot be measured by rank, titles, or awards alone. His greatest achievement was the countless lives he transformed through his teaching, mentorship, and example.
Today, his absence is deeply felt by the generations of students who had the privilege of training under him. His wisdom, kindness, quiet strength, and unwavering belief in the principles of Aikido are missed every day. Yet while the dojo no longer hears his voice leading class, his spirit remains present in every lesson taught, every technique practiced, and every act of respect shown on the mat.
His students—many of whom have trained with him for decades—remain united in their commitment to preserving the Tenshinkai tradition. Together with his family and senior instructors, they continue the work he devoted his life to, ensuring that future generations will experience the same values, discipline, and sense of community that Sensei Phong instilled in everyone who walked through the dojo doors.
The Tenshinkai Aikido Federation stands today not only as a martial arts organization, but as a living testament to Sensei Dang Thong Phong's vision. His life's work continues through every student who carries his teachings forward, ensuring that his mission of love, peace, and lifelong learning will endure for generations to come.
Throughout his lifetime, Sensei Phong Thong Dang was deeply committed to sharing his knowledge of Aikido with students around the world. In addition to decades of teaching on the mat, he co-authored numerous instructional books designed to help students better understand the techniques, principles, philosophy, and traditions of Aikido.
