Here is a list of those starting with the letter "A":
AAMA American Architectural Manufacturers Association
AAMA American Apparel Manufacturers Association
AAMI Association for the Advancement of Medical Instrumentation
AAMVA American Association of Motor Vehicle Administrators
AASHTO American Association of State and Highway Transportation Officials
AATCC American Association of Textile Chemists and Colorists
ABMA American Brush Manufacturers Association
ACDE Association of Commercial Diving Educators
ACI American Concrete Institute
ADA American Dental Association
ADAAG Americans with Disabilities Act Accessibility Guidelines
AGA American Gas Association
AES Audio Engineering Society
AFS American Foundrymen’s Society
AGMA American Gear Manufacturers Association
AIA Automated Imaging Association
AIAA American Institute of Aeronautics and Astronautics
AIChE American Institute of Chemical Enginers
AIHA American Industrial Hygene Association
AIIM Association for Information and Image Management
AISC American Institute of Steel Construction, Inc.
AITC American Institute of Timber Construction
ALI Automotive Lift Institute
AMCA Air Movement and Control Association
ANS American Nuclear Society
ANSI American National Standards Institute
API American Petroleum Institute
ARI Air Conditioning and Refrigeration Institute
ARMA Association of Records Managers and Administrators
ASA Acoustical Society of America
ASAE American Society of Agricultural Engineers
ASBE American Society of Bakery Engineers
ASCE American Society of Civil Engineers
ASHRAE American Society of Heating, Refrigeration and Air Conditioning Engineers
ASME American Society of Mechanical Engineers
ASNT American Society for Nondestructive Testing
ASQC American Society of Quality Control
ASSE American Society of Safety Engineers
ASTM American Society for Testing and Materials
ATMI American Textile Manufacturers Association
AWS American Welding Society
There are scores of other entities listed.
The links are sponsored by Michael D. Leshner, P.E. & Associates; apparently he provides "Expert Forensic Engineering Investigation and Analysis."