Organic Agriculture Certification Thailand (ACT) is an independent certification body established in 1995.  In 1999, ACT completed its first organic standards and began offering certification and inspection services. It gained legal status with the registration of Foundation of Organic Agriculture Certification Thailand in 2001.

Through the years, ACT has attained accreditation and recognition as a certification body under many programs and regulations, included ISO/IEC 17065 IOAS since 2016.