The American Bus Association (ABA) is a trade association for motorcoach operators and tour companies in the United States and Canada. The membership of the association consists of about 1,000 companies that operate buses or bus-based tours, about 2,800 organizations representing the travel and tourism industry, and several hundred suppliers of buses and related products and services. Its headquarters is located in Washington, D.C.

The organization was founded in 1926 as the Motor Bus Division of the American Automobile Association. It was reorganized in 1930 as the National Association of Motor Bus Operators, and in 1960, it changed its name to the National Association of Motor Bus Owners. It adopted its present name (American Bus Association) in 1977.

The organization has four types of members:

Motorcoach Operators: companies that own motorcoaches and provide privately contracted services such as charters, tours, sightseeing, scheduled service, airport express service, school bus service, and/or local receptive operations. (The membership does not include public transport bus services).

Tour Operators: companies that organize tours without owning equipment. They offer travel packages by arranging for transportation to hotels, attractions and other travel suppliers.

Travel Industry Members: tourism-related companies and organizations that work in partnership with the North American motorcoach industry. They include travel and tourism companies, convention and visitor bureaus, destination marketing organizations, accommodations, attractions, food service organizations, and tourism service professionals such as receptive operators who specialize in tour planning for a local area.

Associate Members: manufacturers and suppliers of buses and bus-related products and services.

The ABA provides networking and business development opportunities, government advocacy, and information about the industry. It works to connect members in several segments of the motorcoach, tour, and travel communities.