The National Automobile Dealers Association (NADA) is a trade organization in the United States that represents the interests of automobile dealers. Founded in 1917, it provides resources, advocacy, and support to its members, which include both new and used car dealerships. NADA works to promote fair business practices and improve the automotive retail industry. In addition to advocacy, NADA offers training programs, industry research, and various services to help dealers succeed. The organization also hosts an annual convention, bringing together dealers, manufacturers, and industry experts to discuss trends and challenges in the automotive market.