Yoga Alliance is a U.S.-based nonprofit membership trade and professional organization for yoga teachers. The organization is headquartered in Arlington, Virginia.
Registered Yoga Teacher, a title in the United States that designates a yoga teacher who has received a certain standard of yoga teacher training at a Registered Yoga School, is offered by the Yoga Alliance at the 200-, 300- and 500-hour levels. As of 2007, there were 9,940 yoga teachers who had met the criteria needed to be registered with Yoga Alliance.
According to the Yoga Alliance, the Yoga Alliance Registry is a voluntary credentialing system. The teacher registry is not a certification program, but a listing of teachers who meet Yoga Alliance's Requirements for teaching experience and have completed their training at a Registered Yoga School.