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."