Czech Association of Iyengar Yoga (ČAIJ) is a civil association, that unites people interested in the Iyengar yoga, based on the teaching of guruji B.K.S. Iyengar [əjːəŋɡɑːr]. ČAIJ provides actual information from both Czech and international Iyengar yoga community, especially about lectures, workshops and courses. It is also focused on the introduction of Iyengar yoga to the wide public and manages the database of the internationally certified Iyengar yoga teachers.

The main goal of ČAIJ is a preservation of the standard of Iyengar yoga education in czech republic and organization of the regular assesments and teacher certifications.