AIA is a national trade association representing the automotive aftermarket industry in Canada. The aftermarket is a $18.7 billion industry that employs more than 420,200 people. The industry is composed of companies that manufacture, distribute and install automotive replacement parts, accessories, tools, and equipment.
 
AIA represents manufacturers, re-builders, manufacturers agents, warehouse distributors, national distributors, buying groups, wholesalers, machine shops, retailers, and through its councils, the interests of collision repair shops and automotive service and repair outlets.

AIA's mandate is to promote, educate and represent members in all areas that impact the growth and prosperity of the industry.