Associated Builders and Contractors (ABC) is a national trade association representing the construction industry in the United States. The organization represents more than 21,000 members, including contractors, subcontractors, suppliers, and industry professionals. ABC's mission is to promote free enterprise and open competition in the construction industry, and to provide its members with resources and support to help them succeed. The organization offers a range of services, including advocacy, education, and networking opportunities. ABC was founded in 1950 and is headquartered in Washington, D.C.