IAS is a nonprofit accreditation body that provides accreditation for testing laboratories, calibration laboratories, inspection agencies, certification bodies, training agencies and more. The IAS headquarters is in Brea, California, USA.

Accreditation from IAS provides independent verification that businesses and governmental entities are competent and comply with industry and/or international standards. IAS is an internationally recognized accreditation body that has been providing world-class customer service since 1975.