Automated Commercial System - "The Customs Service's Automated Commercial System, ACS, is a joint public-private sector computerized data processing and telecommunications system linking customhouses, members of the import trade community, and other government agencies with the Customs"

　　Automated Information Exchange - "AIES, a part of Customs' Automated Commercial System, allows for exchange of classification and value information between field units and headquarters. "

　　Automated Manifest Systems - "AMS, a part of Customs' Automated Commercial System (ACS) controls imported merchandise from the time a carrier's cargo manifest is electronically transmitted to Customs until control is relinquished to another segment of the ACS. "

　　Automated Trade Locator Assistance Network - "ATLAS is a Small Business Administration-sponsored, contractor-operated, automated system which provides market research information and statistics on world markets by SIC code (and possibly harmonized system). Indirect access is available for businesses."

　　AUTOVON - Automatic Voice Network

　　Aux. - Auxiliary Vessel

　　Av. - Average

　　Av. disbts. - Average disbursements

　　AVE - Ad Valorem Equivalent

　　AWB - Airway Bill

　　The Corporacion Andina de Fomento - "CAF (English: Andean Development Corporation) supports economic integration among members of the Andean Group by encouraging specialization, distribution of investments and by providing financial and technical help."

        Association of Southeast Asian Nations - "ASEAN was established in 1967 to promote political, economic, and social cooperation among its six member countries: Indonesia, Malaysia, Philippines, Singapore, Thailand, and Brunei. ASEAN headquarters are in Jakarta, Indonesia. In January 1992, ASEAN"

　　At. wt. - Atomic Weight

　　ATFP - Arab Trade Financing Program

　　athwartships - Across the ship or from side to side.

　　ATI - "American Traders Index, Andean Trade Initiative"

　　Atl. - Atlantic

　　ATLAS - Automated Trade Locator Assistance Network

　　ATMIC - Agricultural Trade and Marketing Information Center

　　ATOs - Agricultural Trade Offices

　　ATP - Advanced Technology Products

　　ATPA - Andean Trade Preference Act

　　ATPI - Andean Trade Preference Initiative

　　AUMA - "Die Ausstellungs- und Messe-Ausschuss der Deutschen, Wirtschaft"

　　Ausfuhrkredit-Gesellschaft - AKA (English: Export Credit Establishment) is an association of German banks which provide medium and long-term funding for exports.

　　Ausstellungs (Die) - und Messe-Ausschuss der Deutschen Wirtschaft - "AUMA (German: the German Industry Council for Exhibitions and Trade Fairs) promotes exports by bringing together government, semiprivate, and private organizations in the coordination of domestic and overseas trade events. AUMA is a private organization "

　　Automated Broker Interface - "ABI, a part of Customs' Automated Commercial System, permits transmission of data pertaining to merchandise being imported into the United States. Qualified participants include brokers, importers, carriers, port authorities, and independent data process"