Tetsuo Sà Âkatsu (1870âÂÂ1954) was a Japanese Rinzai Zen rà Âshi. He was a Dharma heir of Soyen Shaku.
Tetsuo Sokatsu received dharma transmission from Soyen Shaku at the age of 29. Thereafter he traveled throughout Japan, on "a pilgrimage of great Zen temples". Sokatsu continued his travels outside Japan for two years, visiting Burma, Ceylon and India, where he lived with "barefoot sadhus".
Soyen Shaku put him in charge of Ryà Âbà  Kai, and gave him the hermitage-name "Ryobo-an". Sokatsu opened the hermitage for lay-practice, opening up the possibility of dharma transmission to lay practitioners. At the end of World War II Sokatsu closed Ryà Âbà  Kai, but the lay practice was continued by his dharma heir Koun-an Roshi.
In 1906, Sokatsu went to California with a group of fourteen students, including Gotà  Zuigan and Sokei-an Shigetsu Sasaki. He stayed there for four years, Sokei-an Sasaki being the only one to stay in the United States.