Amateur Astronomers Association
Appraisers Association of America
Access All Areas
Access Approval Authority
Accounting, Authorization and Authenti…
Aces of ANSI Art
Acquisition Approval Authority
Acrylic Acid Anhydride
Action Awareness Alert
Action on Alcohol Abuse
Acute Anxiety Attack
Adaptive Array Antenna
Administration, Authorization and Auth…
Adult Album Alternative
Advanced Acoustic Analysis
Advanced Acoustic Array
Advanced Amphibious Aircraft
Against All Authority
Agent Assembly Area
Agricultural Aircraft Association
Airborne Array Aperture
Aircraft Alert Area
Airport Airspace Analysis
Alberta Association of Architects
Allied Artists' Association
American Abstract Artists
American Academy of Addictionology
American Academy of Advertising
American Academy of Allergy
American Acounting Association