| Code | Name |
|---|
| 3-A | 3-A Sanitary Standards, Inc. |
| A3 | Association for Advancing Automation (A3) |
| A4A | Airlines for America |
| AA | The Aluminum Association |
| AACEi | AACE International (Association for the Advancement of Cost Engineering) |
| AAMA | American Association of Medical Assistants (AAMA) |
| AAMI | Association for the Advancement of Medical Instrumentation |
| AASHTO | American Association of State Highway and Transportation Officials |
| AATCC | American Association of Textile Chemists and Colorists |
| ABMA | American Bearing Manufacturers Association |
| ABS | American Bureau of Shipping |
| ACI | American Concrete Institute |
| ADA | American Dental Association |
| ADS | ADS |
| AES | Audio Engineering Society |
| AFS | American Foundry Society (AFS) |
| AGA | American Gas Association |
| AGMA | American Gear Manufacturers Association |
| AHRI | U.S. Air-Conditioning, Heating, and Refrigeration Institute (US-AHRI) |
| AIA | Aerospace Industries Association |
| AIA/NAS | Aerospace Industries Association/ANSI Aerospace Standards |
| AIAA | American Institute of Aeronautics and Astronautics (AIAA) |
| AIIM | Association for Information and Image Management (AIIM) |
| AIR FORCE | U.S. Air Force |
| AISC | American Institute of Steel Construction (AISC) |
| AISI | American Iron and Steel Institute (AISI) |
| AITC | American Institute of Timber Construction |
| ALI | American Ladder Institute (ALI) |
| AMCA | Air Movement and Control Association (AMCA) |
| American Society of Sanitary Engineering | American Industrial Hygiene Association （AIHA) |
| ANS | American Nuclear Society (ANS) |
| ANSI | American National Standards Institute （ANSI) |
| AOAC | Association of Official Analytical Chemists (AOAC) |
| AOCS | The American Oil Chemists' Society |
| API | American Petroleum Institute (API) |
| AREMA | American Railway Engineering and Maintenance-of-Way Association (AREMA) |
| ARI | U.S. Air-Conditioning, Heating, and Refrigeration Institute (US-AHRI) |
| ARINC | Aeronautical Radio Inc. |
| ARMY | U.S. Military Regulations and Norms |
| ARPM | Association for Rubber Products Manufacturers |
| ASA | Acoustical Society of America (ASA) |
| ASABE | The American Society of Agricultural and Biological Engineers |
| ASCE | American Society of Civil Engineers (ASCE) |
| ASHRAE | American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) |
| ASME | American Society of Mechanical Engineers (ASME) |
| ASNT | American Society For Nondestructive Testing (ASNT) |
| ASQ | American Society of Quality Control （ASQC) |
| ASSE | American Society of Safety Engineers |
| ASSP | American Society of Safety Professionals (ASSP) |
| ASTM | American Society for Testing and Materials (ASTM) |
| ATIS | Alliance of Telecommunications Industry Solutions （ATIS) |
| AWPA | American Wood Protection Association |
| AWS | American Welding Society (AWS) |
| AWWA | American Water Works Association (AWWA) |
| BHMA | (U.S.) Builders Hardware Manufacturers Association |
| BICSI | BICSI International Standards (BICSI) |
| BIFMA | Business and Institutional Furniture Manufacturers Association （BIFMA) |
| BMI | Battelle Memorial Institute |
| BOCA | Building Officials and Code Administrators International(U.S.) |
| CCPA | Cemented Carbide Producers Association (CCPA) |
| CEA | Consumer Electronics Association （U.S.) |
| CEMA | Conveyor Equipment Manufacturers Association (CEMA) |
| CFR | Code of Federal Regulations (CFR) |
| CGA | Compressed Gas Association (U.S.) |
| CMAA | Crane Manufacturers Association of America (CMAA) |
| COE | U.S. Army Corps of Engineers Headquarters |
| CPSC | Consumer Product Safety Commission |
| CTI | Cooling Technology Institute |
| DLA | Defense Logistics Agency |
| DMS | Division of Mathematical Sciences (MPS/DMS) |
| DOC | U.S. Department of Commerce (DOC) |
| DOD | Military Standards (MIL-STD) |
| DOI | United States Department of the Interior |
| DOJ | Department of Justice （U.S.) |
| DOL | United States Department of Labor |
| DOT | U.S. Department of Transportation (DOT) |
| DSCC | Defense Supply Centre Columbus |
| ECA | Electronic Components, Assemblies and Materials Association |
| ECIA | Electronic Components, Assemblies and Materials Association |
| EIA | Electronic Industrial Alliance (U.S.) |
| EPA | U.S. Environmental Protection Agency (U.S. EPA) |
| ESD | Electrostatic Discharge Association (ESDA) |
| ESTA | Entertainment Services and Technology Association (ESTA) |
| FAA | Federal Aviation Administration (FAA) |
| FCC | Federal Communications Commission |
| FCI | Fluid Controls Institute |
| FCR | US Federal Contractor Registration (USFCR) |
| FDA | U.S. Food and Drug Administration |
| FORD | (U.S.) Ford Automotive Standards |
| GA | Gypsum Association,USA |
| GBC | U.S. Green Building Council |
| GEIA | Government Electronic & Information Technology Association |
| GM | General Motors Corporation (GM) |
| GME | GM Europe |
| GMKOREA | GM Daewoo |
| GMNA | GM North America |
| GMSA | General Motors do Brasil |
| GMW | GM Global |
| GPA | Natural Gas Processor's Association (NGPA) |
| GSA | General Services Administration USA |
| GSFC | Goddard Space Flight Center |
| HHS | United States Department of Health and Human Services |
| HI | Hydraulic Institute (HI) |
| HUD | U.S. Department of Housing and Urban Development (HUD) |
| IAPMO | International Association of Plumbing and Mechanical Officials |
| ICC | International Code Council |
| ICEA | Insulated Cable Engineers Association （ICEA) |
| IEEE | Institute of Electrical and Electronics Engineers (IEEE) |
| IEEE/EIA/JISWG | Institute of Electrical and Electronics Engineers/Electronic Industry Association |
| IESNA | Illuminating Engineering Society of North America |
| IEST | Institute of Environmental Sciences and Technology |
| IFI | Industrial Fasteners Institute |
| IIAR | International Institute of Ammonia Refrigeration |
| IICRC | Institute of Inspection, Cleaning and Restoration Certification |
| IPC | Institute of Interconnecting and Packaging Electronic Circuits (IPC) |
| ISA | Instrument Society of America (ISA) |
| ITE | Institute of Transportation Engineers (ITE) |
| JEDEC | (U.S.) Joint Electron Device Engineering Council Soild State Technology Association |
| JSC | (U.S.) Johnson Space Center |
| KSC | (U.S.) Kennedy Space Center |
| LIA | Laser Institute of America (LIA) |
| MSFC | Marshall Space Flight Center |
| MSS | Manufacturers Standardization Society of the Valve and Fitting Industry (MSS) |
| NAAMM | National Association of Architectural Metal Manufacturers |
| NACE | National Association of Corrosion Engineers (NACE) |
| NAPM | National Association of Photographic Manufacturers, inc. |
| NASA | National Aeronautics and Space Administration (NASA) |
| NAVISTAR | International Federation of Trucks and Engines |
| NAVY | United States Navy |
| NBBI | National Board of Boiler and Pressure Vessel Inspectors (NBBI) |
| NECA | National Electrical Contractors Association (NECA) |
| NEMA | National Electrical Manufacturers Association（NEMA) |
| NFPA | National Fire Protection Association (NFPA) |
| NFSI | National Floor Safety Institute (NFSI) |
| NISO | National Information Standard Organization |
| NIST | National Institute of Standards and Technology (NIST) |
| NSAA | National Ski Areas Association |
| NSF | National Sanitation Foundation (NSF) |
| PDA | Parenteral Drug Association |
| PEI | Petroleum Equipment Institute (PEI) |
| PFI | National Association of Pipe Fabricators (NAPF) |
| PIA | (U.S.) Parachute Industry Association |
| PICMG | (U.S.) PCI Industrial Computer Manufacturers Group |
| PIP | Process Industry Practices |
| PLASTICS | Society of the Plastics Industry (PLASTICS) |
| PPI | (U.S.) Plastic Pipe Association |
| RMA | Rubber Manufacturers Association (RMA) |
| RTCA | Radio Technical Commission for Aeronautics |
| RVIA | Recreational Vehicle Industry Association (RVIA) |
| SAAMI | Sporting Arms and Ammunition Manufacturers' Institute |
| SACMA | Suppliers of Advanced Composite Materiats Association |
| SAE | Society of Automotive Engineers (SAE) |
| SAIA | Scaffold & Access Industry Association, Inc. (SAIA) |
| SCTE | Society of Cable Telecommunications Engineers (SCTE) |
| SDI | Steel Door Institute |
| SIA | Scaffold Industry Association |
| SMPTE | Society of Motion Picture and Television Engineers (SMPTE) |
| SSPC | The Society for Protective Coatings (SSPC) |
| TAPPI | Technical Association of the Pulp and Paper Industry |
| TCA | Tile Council of North America |
| TCATA | Textile Care Allied Trades Association |
| TCIA | Tree Care Industry Association |
| TECHAMERICA | American Association of Electronics and Information Technology Standards |
| TIA | (U.S.) Telecommunications Industries Association |
| TRA | The Tire and Rim Association, Inc |
| UAMA | Unified Abrasives Manufacturers' Association |
| UL | Underwriters Laboratories (UL) |
| UOP | Universal Oil Products Company (UOP) |
| USDA | U.S. Department of Agriculture |
| VA | United States Department of Veterans Affairs (VA) |
| VITA | VMEbus International Trade Association (VITA) |
| WDMA | Window & Door Manufacturers Association (WDMA) |
| WRC | Welding Research Council |