The Automotive Aftermarket Industry Association (AAIA) is a non-profit trade association whose 2,700 member companies conduct business worldwide in the motor vehicle aftermarket industry. AAIA was formed in 1999 from the consolidation between the Automotive Parts & Accessories Association (APAA) and the Automotive Service Industry Association (ASIA).

The Automotive Parts & Service Association (APSA) is a non-profit trade association serving the needs of automotive wholesale and service related business members in the states of Arkansas, Colorado, Iowa, Kansas, Louisiana, Missouri, Oklahoma,  Nebraska, New Mexico, Texas and Wyoming.