Standards We Provide
| 3-A | 3-A Sanitary Standards, Inc |
| 88Open | 88 Open Consortium (Obsolete) |
| AA | Aluminum Association |
| AAA | American Ambulance Association |
| AAAA | American Association of Advertising Agencies |
| AAAI | American Association for Artificial Intelligence |
| AABB | American Association of Blood Banks |
| AABC | Associated Air Balance Council |
| AACC | American Association for Contamination Control (merged with IEST) |
| AACC | AACC International (formerly American Association of Cereal Chemists) |
| AACC | American Automatic Control Council |
| AACC | Airports Associations Coordinating Council (Now Airports Council International) |
| AACE | AACE International (formerly American Association of Cost Engineers) |
| AAES | American Association of Engineering Societies |
| AAF | Association of Air-Conditioning and Refrigeration of Argentina |
| AAFA | American Apparel and Footwear Association |
| AAFCO | Association of American Feed Control Officials |
| AAMA | American Architectural Manufacturers Association |
| AAMI | Association for the Advancement of Medical Instrumentation |
| AAMMC | American Association of Medical Milk Commissions |
| AAMVA | American Association of Motor Vehicle Administrators |
| AAN | American Association of Nurserymen (Now ANLA) |
| AAP | Association of American Publishers |
| AAP | American Academy of Pediatrics |
| AAPCC | American Association of Poison Control Centers |
| AAPFC | Association of American Plant Food Control Officials |
| AAPG | American Association of Petroleum Geologists |
| AAR | Association of American Railroads |
| AARC | American Association for Respiratory Care |
| AARST | American Association of Radon Scientists and Technologists |
| AAS | American Astronautical Society |
| AASHTO | American Association of State Highway and Transportation Officials |
| AATCC | American Association of Textile Chemists and Colorists |
| ABA | American Bankers Association |
| ABA | American Beverage Association |
| ABC | American Blood Commission (now ICCBBA) |
| ABFLO | Association of Bedding & Furniture Law Officials (Now IABFLO) |
| ABMA | American Boiler Manufacturers Association |
| ABMA | American Bearing Manufacturers Association |
| ABMA | American Brush Manufacturers Association |
| ABNT | Associação Brasileira de Normas Técnicas (National Standards Body of Brazil) |
| ABS | American Bureau of Shipping |
| ABSMA | American Bleached Shellac Manufacturers Association (Obsolete) |
| ABYC | American Boat and Yacht Council |
| ACC | American Chemistry Council |
| ACCA | Air Conditioning Contractors of America |
| ACCT | Association for Challenge Course Technology |
| ACDE | Association of Commercial Diving Educators |
| ACE | Army Core of Engineers |
| ACE | American Council on Education |
| ACEEE | American Council for an Energy-Efficient Ecomony |
| ACGIH | American Conference of Industrial Hygienists |
| ACI | American Concrete Institute |
| ACI | Airports Council International |
| ACI | American Cleaning Institute |
| ACM | Association for Computing Machinery |
| ACMA | American Composites Manufacturers Association |
| ACMI | Art & Creative Materials Institute |
| ACP | American College of Physicians |
| ACPA | American Concrete Pavement Association |
| ACR | American College of Radiology |
| ACR | Association of Container Reconditioners (Now RIPA) |
| ACS | American Chemical Society |
| ACS | American Ceramic Society |
| ACSM | American Congress on Surveying and Mapping |
| ACT | Association of Cryogenic Technicians (now CSA) |
| ACTS | Advisory Commission on Textbook Specifications (Now NASTA) |
| ADA | American Dental Association |
| ADC | Air Diffusion Council |
| ADCI | American Die Casting Institute (Now NADCA) |
| ADD | Australian Department of Defense |
| ADDA | American Design and Drafting Association |
| ADI | Air Distribution Institute |
| ADPA | American Defense Preparedness Association (Now NDIA) |
| ADPI | American Dairy Products Institute |
| AdvaMed | Advanced Medical Technology Association |
| AECMA | Association of European Aircraft and Component Manufacturers (Now ASD) |
| AECT | Association for Educational Communications and Technology |
| AEF | Aerospace Education Foundation (Now AFA) |
| AEIC | Association of Edison Illuminating Companies |
| AEM | Association of Equipment Manufacturers |
| AEMA | Asphalt Emulsion Manufacturers Association |
| AENOR | Spanish Association for Standardization and Certification |
| AES | Audio Engineering Society |
| AES | Abrasive Engineering Society |
| AESF | American Electroplaters and Surface Finishers Society (Now NASF) |
| AF | U.S. Air Force |
| AFA | American Fence Association |
| AFA | Air Force Association |
| AFBMA | Anti Friction Bearing Manufacturers Association (Now ABMA) |
| AFIA | American Feed Industry Association |
| AFNOR | Association Francaise De Normalisation |
| AF&PA | American Forest & Paper Association |
| AFPM | American Fuel &Petrochemical Manufacturers |
| AFS | American Foundrymen's Society |
| AGA | American Gas Association |
| AGA | Abrasive Grain Association (now United Abrasives Manufacturers Associated) |
| AGA | American Galvanizers Association |
| AGCA | Associated General Contractors of America |
| AGMA | American Gear Manufacturers Association |
| AGRSS | Automotive Glass Replacement Safety Standards Committee, Inc. (Now AGSC) |
| AGS | American Glovebox Society |
| AGSC | Auto Glass Safety Council |
| AHA | American Hospital Association |
| AHA | American Hardboard Association |
| AHA | American Heart Association |
| AHAM | Association of Home Appliance Manufacturers |
| AHDGA | American Hot Dip Galvanizers Association (now AGA) |
| AHRI | Air-Conditioning, Heating, and Refrigeration Institute |
| AI | Asphalt Institute |
| AIA | Automated Imaging Association |
| AIA | Asbestos Information Association North America |
| AIA | American Institute of Architects |
| AIA | American Insurance Association |
| AIA | Aerospace Industries Association |
| AIAA | Aerospace Industries Association of America (now AIA) |
| AIAA | American Institute of Aeronautics & Astronautics |
| AIAG | Automotive Industry Action Group |
| AIB | American Institute of Baking |
| AICHE | American Institute of Chemical Engineers |
| AIF | Atomic Industrial Forum (Obsolete) |
| AIHA | American Industrial Hygiene Association |
| AIIM | Association for Information and Image Management, International |
| AIM | AIM North America (Formerly Automatic Identification Manufacturers) |
| AIMS | American Institute of Merchant Shipping (Obsolete) |
| AIP | American Institute of Physics |
| AIRAH | Australian Institute of Refrigeration Air conditioning and Heating |
| AISC | American Institute of Steel Construction |
| AISE | Association of Iron and Steel Engineers (Now AIST) |
| AISI | American Iron and Steel Institute |
| AIST | Association for Iron and Steel Technology |
| AITC | American Institute of Timber Construction |
| AIUM | American Institute of Ultra-Sound In Medicine |
| ALA | American Lighting Association |
| ALCA | American Leather Chemists Association |
| ALI | American Law Institute |
| ALI | American Ladder Institute |
| ALI | Automotive Lift Institute |
| ALSC | American Lumber Standards Committee |
| AMA | American Medical Association |
| AMCA | Air Movement and Control Association |
| AMD | Association of Millwork Distributors |
| AMO | Archery Manufacturers Organization |
| AMS | American Meteorological Society |
| AMSi | AMC Institute |
| AMT | The Association for Manufacturing Technology |
| ANFI | Association of Nonwoven Fabrics Industry |
| ANLA | American Nursery & Landscape Association |
| ANMC | American National Metric Council (Now USMA) |
| ANOR | Agence des Normes et de la Qualité (National Standards Body of Cameroon) |
| ANS | American Nuclear Society |
| ANSI | American National Standards Institute |
| AOAC | AOAC International (Formerly Association of Official Analytical Chemists) |
| AOCS | American Oil Chemists Society |
| AORN | Association of Operating Room Nurses |
| AOSA | Association of Official Seed Analysts |
| APA | APA - The Engineered Wood Association (formerly American Plywood Association) |
| APCA | Air Pollution Control Association (Now AWMA) |
| APCO | Association of Public-Safety Communications Officials-International |
| APHA | American Public Health Association |
| API | American Petroleum Institute |
| API | American Paper Institute (Now AF&PA) |
| APICS | American Production and Inventory Control Society |
| APSP | Association of Pool and Spa Professionals |
| AR | U.S. Army |
| ARA | Agricultural Retailers Association |
| AREA | American Railway Engineering Association (Now AREMA) |
| AREMA | American Railway Engineering and Maintenance-of-Way Association |
| ARI | Air-Conditioning and Refrigeration Institute (Now AHRI) |
| ARIB | Association of Radio Industries and Businesses |
| ARINC | Aeronautical Radio, Inc. |
| ARMA | ARMA International (formerly Association of Records Managers and Administrators) |
| ARMA | Asphalt Roofing Manufacturing Association |
| ARRA | Asphalt Recycling and Reclaiming Association |
| ARRL | American Radio Relay League |
| ARTBA | American Road and Transportation Builders Association |
| ASA | Acoustical Society of America |
| ASABE | American Society of Agricultural and Biological Engineers |
| ASAE | American Society of Agricultural Engineers (now ASABE) |
| ASB | American Society of Baking |
| ASBC | American Society of Brewing Chemists |
| ASCC | American Society of Concrete Constructors |
| ASCE | American Society of Civil Engineers |
| ASC X9 | Accredited Standards Committee X9, Incorporate |
| ASD | Association of Steel Distributors |
| ASD | Aerospace and Defense Industries Association of Europe |
| ASEP | American Society of Electroplated Plastics (Obsolete) |
| ASHRAE | American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. |
| ASI | Austrian Standards Institute/Österreichisches Normungsinstitut |
| ASIS | ASIS International |
| ASM | ASM International (formerly American Society for Metals) |
| ASME | ASME International (Formerly American Society of Mechanical Engineers) |
| ASNT | American Society for Nondestructive Testing |
| ASP | American Society for Photogrammetry (Now ASPRS) |
| ASPA | American Sod Producers Association (Now TPI) |
| ASPE | American Society of Plumbing Engineers |
| ASPRS | American Society for Photogrammetry and Remote Sensing |
| ASQ | American Society for Quality (Formerly ASQC) |
| ASSE | American Society of Sanitary Engineering |
| ASSE | American Society of Safety Engineers |
| ASTA | American Spice Trade Association |
| ASTM | ASTM International |
| ATA | Airlines for America (formerly Air Transport Association of America) |
| ATA | American Trucking Associations |
| ATA | Arcnet Trade Association |
| ATA | American Translators Association |
| ATCC | American Type Culture Collection |
| ATIC | Royal Technical Society of Heating, Ventilation and Related Technology Industry |
| ATIS | Alliance for Telecommunications Industry Solutions |
| ATM Forum | ATM Forum (Asynchronous Transfer Mode) (Now Broadband Forum) |
| ATMI | American Textile Manufacturers Institute (Obsolete) |
| ATSC | Advanced Television System Committee |
| AVS | American Vacuum Society |
| AWC | American Wood Council |
| AWCI | Association of the Wall and Ceiling Industry |
| AWDI | American Window and Door Institute |
| AWEA | American Wind Energy Association |
| AWI | Architectural Woodwork Institute |
| AWMA | Air and Waste Management Association |
| AWPA | American Wire Producers Association |
| AWPA | American Wood Protection Association (formerly American Wood-Preservers Association) |
| AWPB | American Wood-Preservers Bureau (obsolete) |
| AWS | American Welding Society |
| AWWA | American Water Works Association |
| AZSTAND | State Committee on Standardization, Metrology and Patents of the Republic of Azerbaijan |
| B11 | B11 Standards, Inc. |
| BAAQMD | Bay Area Air Quality Management District |
| BABT | British Approvals Board for Telecommunications |
| BAKOM | Federal Office of Communications (Switzerland) |
| BAPT | Bundesamt für Post und Telekommunikation (now the Federal Network Agency) |
| BAS | Institute for Standardization of Bosnia and Herzegovina |
| BATC | Bay Area Transit Consultants (now obsolete) |
| BCC | Book Cover Council (Now obsolete) |
| BCI | Battery Council International |
| BDS | Bulgarian Institute for Standardization |
| BELLCORE | Bellcore - Bell Communications Research (Now TELCORDIA) |
| BELST | State Committee for Standardization of the Republic of Belarus |
| BEUTH | Beuth Verlag |
| BHCC | Better Heating - Cooling Council |
| BHMA | Builders Hardware Manufacturers Association |
| BIA | Brick Institute of America |
| BIA | Binding Industries of America |
| BICSI | Building Industry Consulting Service International |
| BIFMA | BIFMA International (formerly Business and Institutional Furniture Manufacturers Association) |
| BIS | Bureau of Indian Standards |
| BISSC | Baking Industry Sanitation Standards Committee |
| BNQ | Bureau de normalisation du Québec |
| BNSI | Barbados National Standards Institution |
| BOBS | Botswana Bureau of Standards |
| BOCAI | Now ICC (formerly Building Officials and Code Administrators International) |
| BOE | Bureau of Explosives |
| BOMA | Building Owners and Managers Association |
| BPI | Building Performance Institute |
| BR | Bureau of Reclamation |
| BSC | Biological Stain Commission |
| BSI | British Standards Institute |
| BSMD | Bahrain Standards & Metrology Directorate |
| BSTI | Bangladesh Standards and Testing Institution |
| BT | British Telecomm |
| CAA | Civil Aviation Authority (U.K.) |
| CABO | Council of American Building Officials (Now ICC) |
| CAGI | Compressed Air and Gas Institute |
| CALTRANS | California Department of Transportation |
| CAMI | Coated Abrasives Manufacturers Institute (now UAMA) |
| CAM-I | Computer-Aided Manufacturing International |
| CAP | College of American Pathologists |
| CAPA | Certified Automotive Parts Association |
| CAPPA | Crusher and Portable Plant Association (obsolete) |
| CARB | California Air Resources Board |
| CARF | CARF International (formerly Commission on Accreditation of Rehabilitation Facilities) |
| CASB | Cost Accounting Standards Board |
| CASI | Center for Aerospace Information |
| CAUS | Color Association of the United States |
| CBEMA | Computer and Business Equipment Manufacturers Association (Now ITI) |
| CBIAC | Chemical and Biological Defense Information Analysis Center (Now CBRNIAC) |
| CBRNIAC | Chemical, Biological, Radiological and Nuclear Defense Information Analysis Center |
| CCF | Consumer Council of Fiji |
| CCG | Canada Communication Group |
| CCH | CCH Inc. (formerly Commerce Clearing House) |
| CCITT | International Telegraph and Telephone Consultative Committee (Now ITU) |
| CCPA | Cemented Carbide Producers Association |
| CCSDS | Consultative Committee for Space Data Systems |
| CCTI | Composite Can and Tube Institute |
| CDA | Copper Development Association |
| CDRH | Center for Devices & Radiological Health |
| CEA | Consumer Electronics Association |
| CEA | Comité Electrotécnico Argentino |
| CEB | Belgian Electrotechnical Committee |
| CEC | Co-ordinating European Council |
| CECC | Electronic Components Committee |
| CELB | Companhia Energética de Borborema (obsolete) |
| CEMA | Conveyor Equipment Manufacturers Association |
| CEN | European Committee for Standardization |
| CENELEC | European Committee for Electrotechnical Standardization |
| CEPT | European Committee for Postal Regulations |
| CETOP | Comité Européen des Transmissions Oléohydrauliques et Pneumatiques |
| CFA | CompactFlash Association |
| CFA | Composites Fabricators Association (now ACMA) |
| CFFA | Chemical Fabrics and Film Association |
| CGA | Canadian Gas Association |
| CGA | Compressed Gas Association |
| CGSB | Canadian General Standards Board |
| CGSS | Canadian Government Publishing Centre, Supply and Services (Obsolete) |
| CI | Chlorine Institute, Inc. |
| CI | Cordage Institute |
| CI | Composites Institute (obsolete) |
| CIA | Chemical Industries Association |
| CIE | International Commission on Illumination |
| CIMA | Construction Industry Manufacturing Association (Now AEM) |
| CIMI | Computer Integrated Manufacturing Institute (obsolete) |
| CISCA | Ceiling and Interior Systems Construction Association |
| CISPI | Cast Iron Soil Pipe Institute |
| CISPR | Special International Committee on Radio Interference |
| CIVAA | Center for Information and Intelligence in Agri-Food |
| CLFMI | Chain Link Fence Manufacturers Institute |
| CLMA | Composite Lumber Manufacturers Association |
| CLSI | Clinical and Laboratory Standards Institute (formerly NCCLS) |
| CMA | Chemical Manufacturers Association (Now ACC) |
| CMA | Cookware Manufacturers Association |
| CMA | Closure Manufacturers Association |
| CMAA | Crane Manufacturing Association of America |
| CMI | Can Manufacturers Institute |
| CODINORM | Côte d'Ivoire Normalisation (National Standards Body of Ivory Coast) |
| COMSAT | Comsat World Systems (obsolete) |
| CPA | Composite Panel Association |
| CPB | Contractors Pump Bureau (now AEM) |
| CPMB | Concrete Plant Manufacturers Bureau |
| CPSC | Consumer Product Safety Commission |
| CPUC | California Public Utilities Commission |
| CRA | Corn Refiners Association |
| CRA | California Redwood Association |
| CRCPD | Conference of Radiation Control Program Directors |
| CRI | Carpet and Rug Institute |
| CRRC | Cool Roof Rating Council |
| CRSI | Concrete Reinforcing Steel Institute |
| CSA | Canadian Standards Association |
| CSA | CSA America |
| CSA | Cryogenic Society of America |
| CSAA | Central Station Alarm Association |
| CSDA | Concrete Sawing and Drilling Association |
| CSI | Construction Specifications Institute |
| CSI | Coatings Societies International |
| CSMA | Chemical Specialties Manufacturers Association (now CSPA) |
| CSPA | Consumer Specialty Products Association |
| CSSB | Cedar, Shake and Shingle Bureau |
| CTA | California Trucking Association |
| CTFA | Cosmetic, Toiletry, and Fragrance Association (now PCPC) |
| CTI | Cooling Tower Institute |
| CYS | Cyprus Organization for Standardization |
| DARCOM | Department of Army Material Development and Readiness Command |
| DARPA | Defense Advanced Research Projects Agency |
| DASMA | Door and Access Systems Manufacturers Association |
| DCA | Defense Communications Agency (Now DISA) |
| DEFSTAN | UK Ministry of Defence |
| DEMA | Diesel Engine Manufacturers Association (Obsolete) |
| DFI | Deep Foundations Institute |
| DFISA | Dairy and Food Industries Supplier Association (Obsolete) |
| DHHS | Department of Health & Human Services |
| DHI | Door and Hardware Institute |
| DHMA | Drapery Hardware Manufacturers Association (Obsolete) |
| DIGENOR | Direccion General de Normas y Sistemas de Calidad |
| DIN | Deutsches Institut Fur Normung |
| DISA | Data Interchange Standards Association |
| DISA | Defense Information System Agency |
| DLA | Defense Logistics Agency |
| DMA | Defense Mapping Agency (Now NGA) |
| DMSC | Dimensional Metrology Standards Consortium, Inc. |
| DN | U.S. Department of the Navy |
| DNA | Defense Nuclear Agency (Now DSWA) |
| DND | Department of National Defence |
| DOA | U.S. Department of Agriculture |
| DOC | U.S. Department of Commerce |
| DOD | U.S. Department of Defense |
| DOE | U.S. Department of Energy |
| DOSH | U.S. Department of Safety and Health (Now OSHA) |
| DOT | U.S. Department of Transportation |
| DPS | General Directorate of Standardization (Albania) |
| DRDAR | U.S. Army Armaments Research |
| DRII | Disaster Recovery Institute International |
| DS | Danish Standards Foundation |
| DSAC | Diaper Service Accreditation Council (Obsolete) |
| DSWA | Defense Special Weapons Agency |
| DTI | Department of Trade and Industry (Obsolete) |
| DWMI | Diamond Wheel Manufacturers Institute (Now UAMA) |
| EASA | Electrical Apparatus Service Association |
| EBU | European Broadcastering Union |
| EC | European Community (Now EU) |
| ECA | Electronic Components Association (Formerly Electronic Components, Assemblies and Materials Association) |
| ECA | Exchange Carrier Association (Now NECA) |
| ECCS | European Convention for Constructional Steelwork |
| ECMA | ECMA International (Formerly European Computer Mfg. Assn.) |
| ECSS | European Cooperation for Space Standardization |
| EDQM | European Directorate for the Quality of Medicines |
| EEI | Edison Electric Institute |
| EEMAC | Electrical Equipment Manufacturers Association of Canada |
| EEMUA | Engineering Equipment and Materials Users Association |
| EFMC | Elastic Fabric Manufacturers Council (Now National Textile Association) |
| EGSA | Electrical Generating Systems Association |
| EIA | Electronic Industries Association (Now ECA) |
| EIA | Environmental Industry Associations |
| EIAJ | Electronics Industries Association of Japan (Now JEITA) |
| EIMA | EIFS Industry Members Association (Formerly Exterior Insulation Manufacturers Association) |
| EJMA | Expansion Joint Manufacturers Association |
| EMA | Envelope Manufacturers Association (Formerly EMAA) |
| EMA | Truck and Engine Manufacturers Association |
| EMAP | Emergency Management Accreditation Program |
| EOS | Egyptian Organization for Standardization & Quality |
| EPA | Environmental Protection Agency |
| EPRI | Electric Power Research Institute |
| ERIM | Environmental Research Institute of Michigan (Now Altarum and MTRI) |
| ESA | European Space Agency |
| ESA | Electronic Security Association, Inc. |
| ESCSI | Expanded Shale Clay and Slate Institute |
| ESDA | ESD Association, Inc. |
| ESI | Ethiopian Standards Institute |
| ESTA | Now PLASA |
| ETCI | ElectroTechnical Council of Ireland |
| ETSI | European Telecommunications Standards Institute |
| EU | European Union |
| FAA | Federal Aviation Administration |
| FASB | Financial Accounting Standards Board |
| FBA | Fibre Box Association |
| FCC | Federal Communications Commission |
| FCC | Federal Construction Council (Now FFC) |
| FCI | Fluid Controls Institute |
| FCS | Federation of Communication Services |
| FDA | Food & Drug Administration |
| FEM | European Federation of Materials Handling |
| FEMA | Federal Emergency Management Agency |
| FFC | Federal Facilities Council |
| FGCC | Federal Geodetic Control Committee (See: FGDC) |
| FGDC | Federal Geographic Data Committee |
| FGMA | Flat Glass Marketing Association (Now: GANA) |
| FHWA | Federal Highway Administration |
| FIA | Forging Industry Association |
| FIA | Footwear Industries of America (Now: AAFA) |
| FM | FM Global (Formerly Factory Mutual) |
| FMI | Food Marketing Institute |
| FORD | Ford Motor Company |
| FPA | Flexible Packaging Association |
| FPS | Fluid Power Society (Now: NFPA) |
| FSA | Fluid Sealing Association |
| FSCT | Federation of Societies for Coatings Technology (Now: CSI) |
| GA | Gypsum Association |
| GAMA | General Aviation Manufacturers Association |
| GANA | Glass Association of North America |
| GAO | Government Accountability Office (Formerly General Accounting Office) |
| GASB | Governmental Accounting Standards Board |
| GBI | Green Building Initiative |
| GCA | Graphic Communications Association (Now IDEAlliance) |
| GEI | Greenguard Environmental Institute |
| GEIA | Now TechAmerica (Formerly Government Electronics Industry Association) |
| GFA | Gasket Fabricators Association |
| GISC | Glazing Industry Secretariat Committee |
| GM | General Motors |
| GMA | Grocery Manufacturers Association |
| GM Holden | General Motors Holden |
| GMPI | GMP Institute (Now ISPE) |
| GOST | Federal Agency on Technical Regulating and Metrology |
| GPA | Gas Processors Association |
| GPI | Glass Packaging Institute |
| GPI | Graphic and Product Identification Manufacturers, Inc. |
| GS | Green Seal, Inc |
| GS1 US | GS1 US |
| GSA | General Services Administration |
| GTEEMC | Georgia Tech Energy and Environmental Management Center |
| GWI | Grinding Wheel Institute (Now UAMA) |
| HAI | Helicopter Association International |
| HEI | Heat Exchange Institute |
| HFES | Human Factors & Ergonomics Society |
| HHS | U.S. Department of Health and Human Services |
| HI | Hydraulic Institute |
| HI | Hydronics Institute (Now GAMA) |
| HIBCC | Health Industry Business Communications Council |
| HIMA | Health Industry Manufacturers Association (Now AdvaMed) |
| HL7 | Health Level Seven |
| HPS | Health Physics Society |
| HPVA | Hardwood Plywood and Veneer Association |
| HPVMA | Hardwood Plywood and Veneer Manufacturers Association (Now HPVA) |
| HTI | Hand Tools Institute |
| HTMA | Hydraulic Tool Manufacturers Association (Obsolete) |
| HUD | Housing and Urban Development |
| HZN | Croatian Standards Institute |
| I3A | International Imaging Industry Association |
| IABFLO | International Association of Bedding and Furniture Law Officials |
| IACET | International Association for Continuing Education and Training |
| IADC | International Association of Drilling Contractors |
| IAEA | International Atomic Energy Agency |
| IAFE | International Association for Food Protection |
| IAI | International Association for Identification |
| IAM | International Association of Movers |
| IAMFES | International Association of Milk, Foods and Environmental Sanitarians (Now IAFE) |
| IANOR | Institut Algerien de Normalisation(Algerian National Standards Body) |
| IAPMO | International Association of Plumbing and Mechanical Officials |
| IARC | International Agency for Research on Cancer |
| IATA | International Air Transport Association |
| IAWCM | International Association of Wiping Cloth Manufacturers (Now SMART) |
| ICAC | Institute of Clean Air Companies |
| ICAO | International Civil Aviation Organization |
| ICBO | International Conference of Building Officials (Now ICC) |
| ICC | Interstate Commerce Commission (Now STB) |
| ICC | International Code Council |
| ICCBBA | Committee for Commonality in Blood Banking Automation |
| ICE | Institution of Civil Engineers |
| ICE | Institute for Credentialing Excellence |
| ICEA | Insulated Cable Engineers Association |
| ICI | Investment Casting Institute |
| ICIA | InfoComm International (Formerly International Communications Industries Association Inc.) |
| ICM | Institute of Caster Manufacturers (Now ICWM) |
| ICONTEC | Instituto Colombiano de Normas Técnicas y Certificación (National Standards Body of Columbia) |
| ICRU | International Commission on Radiation Units and Measurements |
| ICSI | International Computer Science Institute |
| ICWM | Institute of Caster and Wheel Manufacturers |
| IDA | Institute for Defense Analyses |
| IDEAlliance | IDEAlliance |
| IDF | International Dairy Federation |
| IEC | International Electrotechnical Commission |
| IEEE | Institute of Electrical and Electronics Engineers |
| IES | Institute of Environmental Sciences (Now IEST) |
| IESNA | Illuminating Engineering Society of North America |
| IESO | Indoor Environmental Standards Organization |
| IESS | Intelsat Earth Station Standards |
| IEST | Institute of Environmental Sciences and Technology |
| IFAI | Industrial Fabrics Association International |
| IFCI | International Fire Code Institute (Now ICC) |
| IFI | Industrial Fasteners Institute |
| IFSTA | International Fire Service Training Association |
| IGCC | Insulating Glass Certification Council |
| IGMA | Insulating Glass Manufacturers Alliance |
| IHDA | International Hardware Distributors Association (Now NBMDA) |
| IIAR | International Institute of Ammonia Refrigeration |
| IICIT | International Institute of Connectors and Interconnect Technology |
| IICRC | Institute Of Inspection, Cleaning And Restoration |
| IIE | Institute of Industrial Engineers |
| IISRP | International Institute of Synthetic Rubber Producers, Inc. |
| IIW | International Institute of Welding |
| IKECA | International Kitchen Exhaust Cleaning Association |
| ILIA | Indiana Limestone Institute of America, Inc. |
| ILO | International Labour Organization |
| ILTVA | International Light Transportation Vehicle Association, Inc. |
| IMA | International MIDI Association (Now MMA) |
| IMACA | International Mobile Air Conditioning Association (Now MACS) |
| IMAPS | International Microelectronics And Packaging Society |
| IME | Institute of Makers of Explosives |
| IMI | International Masonry Institute |
| IMIA | International Marking & Identification Association |
| IMMM | Institute of Materials, Minerals and Mining |
| IMO | International Maritime Organization |
| IMSA | International Municipal Signal Association |
| INCITS | InterNational Committee for Information Technology Standards |
| INDA | Association of the Nonwoven Fabrics Industry |
| INEN | Instituto Ecuatoriano de Normalizacion (Ecuador) |
| InfoComm | InfoComm International |
| INMM | Institute of Nuclear Materials Management |
| INN | Instituto Nacional de Normalización (National Standards Body of Chile) |
| INPO | Institute of Nuclear Power Operations |
| INTECO | Instituto de Normas Técnicas de Costa Rica (National Standards Body of Costa Rica) |
| IOPP | Institute of Packaging Professionals |
| IP | Institute of Petroleum (Obsolete) |
| IPA | Industrial Perforators Association |
| IPC | IPC - Association Connecting Electronics Industries |
| IPO | IGES/PDES Organization (Obsolete) |
| IQI | International Quality Institute |
| IRAM | Instituto Argentino de Normalización y Certificación - IRAM (Argentinian National Standards Body) |
| ISA | Instrument Society of America |
| ISA | International Society of Arboriculture |
| ISANTA | International Staple, Nail and Tool Association |
| ISDSI | Insulated Steel Door Systems Institute |
| ISEA | Industrial Safety Equipment Association |
| ISI | Iron and Steel Institute (Now IMMM) |
| ISMA | International Snowmobile Manufacturers Association (Formerly ISIA) |
| ISO | International Organization for Standardization |
| ISO | International Silo Association |
| ISPE | International Society for Pharmaceutical Engineering |
| ISRI | Institute of Scrap Recycling Industries |
| ISS | Iron & Steel Society (Now AIST) |
| ISSA | International Slurry Surfacing Association |
| ISTA | International Safe Transit Association |
| ITA | International Trade Administration |
| ITE | Institute of Transportation Engineers |
| ITIC | Information Technology Industry Council |
| ITSDF | Industrial Truck Standards Development Foundation, Inc. |
| ITU | International Telecommunications Union |
| IWCA | International Window Cleaning Association |
| JAA | Joint Aviation Authorities |
| JAPIA | Japan Auto Parts Industries Association |
| JATE | Japan Approvals Institute for Telecommunications Equipment |
| JCAHO | Joint Commision on Accreditation of Healthcare Organizations |
| JCSEE | Joint Committee on Standards for Educational Evaluation |
| JEB | Japan Electronics Bureau |
| JEDEC | JEDEC Solid State Technology Association |
| JEIDA | Japan Electronics Industry Development Association (Now JEITA) |
| JEITA | Japan Electronics and Information Technology Industries Association |
| JIC | Joint Industrial Council (Obsolete) |
| JSA | Japan Standards Association |
| JSAE | Japan Society of Automotive Engineers |
| KATS | Korean Agency for Technology and Standards |
| KCMA | Kitchen Cabinet Maufacturers Association |
| KSA | Korean Standards Association (Now KATS) |
| KTA | Knitted Textile Association (Now NTA) |
| LEO | Leonardo Academy, Inc. |
| LIA | Laser Institute of America |
| LIA | Lead Industries Association (Obsolete) |
| LPA | Laboratory Products Association |
| LPI | Lightning Protection Institute |
| LR | Lloyd's Register |
| LSGA | Laminators Safety Glass Association (Now GANA) |
| MACS | Mobile Air Conditioning Society |
| MAMA | Medical Alert Monitoring Association |
| MBMA | Metal Building Manufacturers Association |
| MCAA | Mechanical Contractors Association of America |
| MCC | Munsell Color Corporation |
| MDA | Marking Device Association (Now IMIA) |
| MDC | MUMPS Development Committee (Obsolete) |
| MDC-CE | Medical Device Certification |
| MedBiq | MedBiquitous Consortium |
| MFMA | Maple Flooring Manufacturers Association |
| MG | Mobility Golf |
| MHIA | Material Handling Industry of America |
| MHRA | Medicines and Healthcare products Regulatory Agency |
| MKA | Machine Knife Association |
| MKMA | Machine Knife Manufacturers Association (Now MKA) |
| MMA | MIDI Manufacturers Association |
| MMA | Monorail Manufacturers Association |
| MMPA | Magnetic Materials Producers Association (Now USMMA) |
| MMSA | Materials and Methods Standards Association |
| MPIF | Metal Powder Industries Federation |
| MPTA | Mechanical Power Transmission Association |
| MRS | Materials Research Society |
| MSS | Manufacturers Standardization Society |
| MSSVFI | Manufacturers Standardization Society of the Valve and Fittings Industry (Now MSS) |
| MTI | Metal Treating Institute |
| MTS | Institute for Market Transformation to Sustainability |
| NAA | National Aggregates Association (Now NSSGA) |
| NAAMM | National Association of Architectural Metal Manufacturers |
| NAB | National Association of Broadcasters |
| NABADA | National Barrel and Drum Association (Now RIPA) |
| NACE | NACE International, the Corrosion Society |
| NACM | National Association of Chain Manufacturers |
| NADCA | North American Die Casting Association |
| NADCA | National Air Duct Cleaners Association |
| NAED | National Association of Electrical Distributors |
| NAESB | North American Energy Standards Board |
| NAGDM | National Association of Garage Door Manufacturers (Now DASMA) |
| NAHB | National Association of Home Builders |
| NAHBRC | NAHB Research Center, Inc. |
| NAHM | National Association of Hosiery Manufacturers (Now THA) |
| NALFA | North American Laminate Flooring Association |
| NAMA | National Automatic Merchandising Association |
| NAME | National Association of Nameplate Manufacturers, Inc. (Now GPI) |
| NAPCA | National Association of Pipe Coating Applicators |
| NAPHCC | National Association of Plumbing-Heating-Cooling Contractors (Now PHCC) |
| NAPM | National Association of Photographic Manufacturers (Now I3A) |
| NAR | National Association of Rocketry |
| NARDA | National Association of Retail Dealers of America |
| NARM | National Association of Relay Manufacturers (Now ECA) |
| NAS | National Academy of Sciences |
| NASA | National Aeronautics and Space Administration |
| NASF | National Association for Surface Finishing |
| NASFM | National Association of Store Fixture Manufacturers |
| NASPO | North American Security Products Organization |
| NASTA | National Association of State Textbook Administrators |
| NATO | North American Treaty Organization (Go to Contracting Officer) |
| NAVA | National Audio Visual Association (Now InfoComm) |
| NAVY | U.S. Navy |
| NBBPVI | National Board of Boiler and Pressure Vessel Inspectors |
| NBGQA | National Building Granite Quarries Association |
| NBMDA | North American Building Material Distribution Association |
| NBN | Bureau de Normalisation (Belgium) |
| NBS | National Bureau of Standards (Now NIST) |
| NC | Oficina Nacional de Normalizacion (NC) (National Standards Body of Cuba) |
| NCCA | National Coil Coating Association |
| NCCLS | NCCLS- The Clinical Laboratory Standards Organization (Now CLSI) |
| NCDC | National Climatic Data Center |
| NCEES | National Council of Examiners for Engineering and Surveying |
| NCGA | National Computer Graphics Association (Obsolete) |
| NCHGR | National Center for Human Genome Research |
| NCI | National Cancer Institute |
| NCI | Nickel Development Institute (Now NI) |
| NCITS | National Committee for Information Technology Standards (Now INCITS) |
| NCMA | National Concrete Masonry Association |
| NCMS | National Center for Manufacturing Sciences |
| NCPA | National Cottonseed Products Association |
| NCPDP | National Council for Prescription Drug Programs |
| NCRP | National Council on Radiation Protection & Measurement |
| NCS | National Communications System |
| NCSA | National Crushed Stone Association (Now NSSGA) |
| NCSL | National Conference of Standards Laboratories |
| NCTA | National Cable & Telecommunications Association |
| NDIA | National Defense Industrial Association |
| NEBB | National Environmental Balancing Bureau |
| NECA | National Electrical Contractors Association |
| NECA | National Exchange Carriers Association |
| NEDA | National Electronic Distribution Association (Now NAED) |
| NEII | National Elevator Industry Inc. |
| NELMA | Northeastern Lumber Manufacturers Association |
| NEMA | National Electrical Manufacturers Association |
| NEMSPA | National EMS Pilots Association |
| NEN | Netherlands Standardization Institute |
| NERC | North American Electric Reliability Council |
| NESDA | National Electronics Service Dealers Association |
| NETA | InterNational Electrical Testing Association |
| NFAIS | National Federation of Abstracting and Information Services |
| NFPA | National Fire Protection Association |
| NFPA | National Forest Products Association (Now AF&PA) |
| NFPA | National Fluid Power Association |
| NFRC | National Fenestration Rating Council |
| NFSA | National Fertilizer Solutions Association (Now ARA) |
| NFSC | National Small Flows Clearinghouse |
| NFSI | National Floor Safety Institute |
| NGA | National Geospatial Intelligence Agency |
| NGCMA | National Gold Car Manufacturers Association (Now ILTVA) |
| NGVC | Natural Gas Vehicle Coalition |
| NGWA | National Ground Water Association |
| NHLA | National Hardwood Lumber Association |
| NHTSA | National Highway Traffic Safety Administration |
| NI | Nickel Institute |
| NIA | National Insulation Association |
| NIACA | National Insulation and Abatement Contractors Association (Now NIA) |
| NIBS | National Institute of Building Sciences |
| NIGMS | National Institute of General Medical Sciences |
| NIJ | National Institute of Justice |
| NIMS | National Institute for Metalworking Skills |
| NIOP | National Institute of Oilseed Products |
| NIOSH | National Institute for Occupational Safety and Health |
| NIRMA | Nuclear Information and Records Management Association |
| NISO | National Information Standards Organization |
| NIST | National Institute of Standards and Technology |
| NIST/ITL | National Institute of Standards and Technology/Information Technology Laboratory |
| NITL | National Industrial Transportation League |
| NKCA | National Kitchen Cabinet Association (Now KCMA) |
| NLA | National Lime Association |
| NMA | National Micrographics Association (Now AIIM) |
| NMEA | National Marine Electronics Association |
| NMRA | National Model Railroad Association |
| NMTBA | National Machine Tool Builders Association (Now AMT) |
| NOAA | National Oceanic and Atmospheric Administration |
| NOCSA | National One Coat Stucco Association |
| NOCSAE | National Operating Committee on Standards for Athletic Equipment |
| NOFMA | National Oak Flooring Manufacturers Association |
| NOPA | National Oilseed Processors Association |
| NPA | National Particleboard Association (Now CPA) |
| NPCA | National Precast Concrete Association |
| NPCA | National Pest Control Association |
| NPES | Association for Suppliers of Printing, Publishing and Converting Technologies |
| NPGA | National Propane Gas Association |
| NPPC | National Pork Producers Council |
| NPRA | National Petroleum Refiners Association (Now AFPM) |
| NRA | National Rifle Association of America |
| NRC | National Research Council of Canada |
| NRC | U.S. Nuclear Regulatory Commission |
| NRCA | National Roofing Contractors Association |
| NRN | Bureau de Normalisation (National Standards Body of Belgium) |
| NRPA | National Recreation and Park Association |
| NSA | National Stone Association (Now NSSGA) |
| NSA | National Security Agency |
| NSAA | National Ski Areas Association |
| NSAI | National Standards Authority of Ireland |
| NSC | National Safety Council |
| NSDA | National Soft Drink Association (Now American Beverage Association) |
| NSF | NSF International |
| NSPI | National Spa and Pool Institute (Now APSP) |
| NSSF | National Shooting Sports Foundation |
| NSSGA | National Stone, Sand and Gravel Association |
| NSWMA | National Solid Wastes Management Association |
| NTA | National Textile Association (Formerly Northern Textile Association) |
| NTIA | National Telecommunications and Information Administration |
| NTIAC | Nondestructive Testing Information Analysis Center (Obsolete) |
| NTMA | National Terrazzo and Mosaic Association |
| NTMA | National Tooling and Machining Association |
| NWMA | National Woodwork Manufacturers Association (Now WDMA) |
| NWPCA | National Wooden Pallet and Container Association |
| NWRA | National Windshield Repair Association |
| NWWDA | National Wood Window and Door Association (Now WDMA) |
| OCC | Office Congolais de Contrôle (National Standards Body of the Democratic Republic of the Congo) |
| OCIMF | Oil Companies International Marine Forum |
| OECD | Organisation for Economic Co-operation and Development |
| OEOSC | Optics and Electro-Optics Standards Council |
| OIML | International Organization of Legal Metrology |
| OLA | Optical Lab Division of The Vision Council (Formerly Optical Laboratories Association) |
| OMB | Office of Management and Budget |
| ON | Österreichisches Normungsinstitut (Now ASI) |
| OPEI | Outdoor Power Equipment Institute |
| OSA | Optical Society of America |
| OSHA | Occupational Safety and Health Administration |
| OTA | Office of Technology Assessment (Obsolete) |
| OVE | Österreichische Verband für Elektrotechnik |
| PCA | Portland Cement Association |
| PCI | Precast/Prestressed Concrete Institute |
| PCI-SIG | PCI Special Interest Group |
| PCMCIA | Personal Computer Memory Card International Association (Use USBIF) |
| PCPC | Personal Care Products Council |
| PCSA | Power Crane and Shovel Association |
| PDA | Parenteral Drug Association |
| PDCA | Painting and Decorating Contractors of America |
| PDI | Plumbing and Drainage Institute |
| PEI | Porcelain Enamel Institute |
| PFI | Pipe Fabrication Institute |
| PGMA | Portable Generator Manufacturers Association |
| PGMC | Primary Glass Manufacturers Council (Now GANA) |
| PHCC | Plumbing-Heating-Cooling Contractors Association |
| PI | Perlite Institute |
| PIA | Parachute Industry Association |
| PICMG | PCI Industrial Computer Manufacturers Group |
| PLASA | PLASA North America |
| PMI | Project Management Institute |
| PMMI | Packaging Machinery Manufacturers Institute |
| PPAA | Personal Protective Armor Association (Obsolete) |
| PPEMA | Portable Power Equipment Maunfacturers Association (Obsolete) |
| PPI | Plastic Pipe Institute |
| PPT | Party of Powder Technology (Japan) (Obsolete) |
| PQMD | Partnership for Quality Medical Donations |
| PRBA | Portable Rechargeable Battery Association |
| PRCA | Professional Ropes Course Association |
| PRI | Performance Review Institute |
| PSA | Photographic Society of America |
| PSAI | Portable Sanitation Association International |
| PSI | Product Safety International |
| PSTC | Pressure Sensitive Tape Council |
| PTI | Post-Tensioning Institute |
| PTI | Power Tool Institute |
| QIC | Quarter-Inch Cartridge Drive Standards Inc. (Obsolete) |
| RA | Radiocommunications Agency |
| RAC | Reliability Analysis Center (Now RIAC) |
| RCJ | Reliability Center for Electronic Components of Japan |
| REA | Rural Electrification Administration (Now RUS) |
| REB | Railway Educational Bureau |
| RESNA | Rehabilitation Engineering and Assistive Technology Society of North America |
| RESNET | Residential Energy Services Network, Inc. |
| RFCI | Resilient Floor Covering Institute |
| RIA | Robotic Industires Association |
| RIAA | Recording Industry Association of America |
| RIAC | Reliability Information Analysis Center |
| RIMS | Risk & Insurance Management Society |
| RIPA | Reusable Industrial Packaging Association |
| RIS | Redwood Inspection Service |
| RLRAC | Rome Labs Reliability Analysis Center (RIAC) |
| RMA | Rubber Manufacturers Association |
| RMI | Rack Manufacturers Institute |
| ROHVA | Recreational Off-Highway Vehicle Association |
| RPTIA | Recreational Park Trailer Industry Association |
| RSTC | Recreational Scuba Training Council |
| RTA | Railway Tie Association |
| RTCA | Radio Technical Commission for Aeronautics |
| RTCM | Radio Technical Commission For Maritime Services |
| RUS | Rural Utilities Service |
| RVIA | Recreation Vehicle Industry Association |
| RWMA | Resistance Welder Manufacturers Association |
| SA | Standards Australia |
| SAAMI | Sporting Arms and Ammunition Manufacturers' Institute |
| SABS | South African Bureau of Standards |
| SAC | Standardization Administration of China |
| SACMA | Suppliers of Advanced Composite Materials Association (Now CFA) |
| SAE | SAE International (Formerly Society of Automotive Engineers) |
| SAIA | Scaffold & Access Industry Association |
| SAMA | Scientific Apparatus Makers Association (Now LPA) |
| SAWE | Society of Allied Weight Engineers |
| SBCA | Structural Building Components Association |
| SBCCI | Now ICC (formerly Southern Building Code Congress International) |
| SCC | Standards Council of Canada |
| SCMA | Southern Cypress Manufacturers Association |
| SCPI | Structural Clay Products Institute (Now BIA) |
| SCTE | Society of Cable Telecommunications Engineers |
| SDA | Soap and Detergent Association (Now ACI) |
| SDI | Steel Door Institute |
| SDI | Steel Deck Institute |
| SEFA | Scientific Equipment and Furniture Association |
| SEM | Society of Experimental Mechanics |
| SEMA | Specialty Equipment Market Association |
| SEMI | Semiconductor Equipment and Materials International |
| SES | Standards Engineering Society |
| SESKO | Finnish Electrotechnical Standards Association |
| SFS | Finnish Standards Association |
| SFSA | Steel Founders Society of America |
| SHRM | Society for Human Resource Management |
| SI | Salt Institute |
| SIA | Scaffold Industries Association (Now SAIA) |
| SIA | Security Industry Association |
| SIGMA | Sealed Insulating Glass Manufacturers Association (Now IGMA) |
| SIS | Swedish Standards Institute |
| SJI | Steel Joist Institute |
| SLAS | Society for Laboratory Automation and Screening |
| SMA | Scale Manufacturers Association |
| SMA | Screen Manufacturers Association |
| SMACCNA | Sheet Metal, and Air Conditioning Contractors National Association |
| SMART | Secondary Materials And Recycled Textiles Association |
| SME | Society of Manufacturing Engineers |
| SME | Society for Mining, Metallurgy, and Exploration |
| SMF | Snell Memorial Foundation |
| SMI | Masonry and Concrete Saw Manufacturers Institute |
| SMI | Spring Manufacturers Institute |
| SMMA | SMMA - The Motor & Motion Association (Formerly the Small Motor Manufacturers Association) |
| SMPTE | Society of Motion Picture and Television Engineers |
| SMTA | Surface Mount Technology Association |
| SNAME | Society of Naval Architects and Marine Engineers |
| SNZ | Standards New Zealand |
| SPE | Society of Plastics Engineers |
| SPEC | Standard Performance Evaluation Corporation |
| SPI | Society of the Plastics Industry, Inc. |
| SPIB | Southern Pine Inspection Bureau |
| SPIE | International Society for Optical Engineering |
| SPRI | Single Ply Roofing Institute |
| SRAM | National Institute of Standards (Armenia) |
| SRC | Semiconductor Research Corporation |
| SSCC | Snowmobile Safety and Certification Committee |
| SSCI | Steel Shipping Container Institute |
| SSFI | Scaffolding, Shoring & Forming Institute |
| SSPC | The Society for Protective Coatings (Formerly the Steel Structures Painting Council) |
| SSPMA | Sump and Sewage Pump Manufacturers Association |
| STB | Surface Transportation Board |
| STC | Society for Technical Communication |
| STI/SPFA | Steel Tank Institute - Steel Plate Fabricators Association |
| SVIA | Specialty Vehicle Institute of America |
| SWEDAC | Swedish Board for Accreditation and Conformity Assessment |
| SWI | Steel Window Institute |
| SWRI | Sealant Waterproofing and Restoration Institute |
| TAPPI | Technical Association of the Pulp and Paper Industry |
| TC | Transport Canada |
| TCATA | Textile Care Allied Trades Association |
| TCIA | Tree Care Industry Association (ASC A300) |
| TCNA | Tile Council of North America (ASC A108) |
| TCT | The Clean Trust |
| TechAmerica | TechAmerica |
| TEMA | Tubular Exchanger Manufacturers Association |
| TFI | The Fertilizer Institute |
| TGA | Therapeutic Goods Administration (Australia) |
| THA | The Hosiery Association |
| TIA | Toy Industry Association |
| TIA | Telecommunications Industry Association |
| TMA | Toy Manufacturers of America |
| TMA | Truck Manufacturers Association (Now EMA) |
| TMC | Technology & Maintenance Council |
| TMMB | Truck Mixer Manufacturers Bureau |
| TMS | The Masonry Society |
| TNI | The NELAC Institute |
| TPI | Truss Plate Institute |
| TPI | Turfgrass Producers International |
| TRA | Tire and Rim Association |
| TRA | Tyre and Rim Association of Australia |
| TRI | The Refractories Institute |
| TTMA | Truck Trailer Manufacturers Association |
| TTMAC | Terrazzo, Tile & Marble Association of Canada |
| TUV | Technischer Uberwachungsverein |
| UAMA | Unified Abrasive Manufacturers' Association |
| UBPPA | Uni-Bell PVC Pipe Association |
| UCC | Uniform Code Council (Now GS1 US) |
| UIC | International Union of Railways |
| UKAS | United Kingdom Accrediation Society |
| UL | Underwriters Laboratories, Inc. |
| UN | United Nations |
| UNCTAD | United Nations Conference on Trade and Development |
| UNI | Ente Nazionale Italiano di Unificazione |
| UNMZ | Czech Office for Standards, Metrology and Testing |
| USBIF | USB Implementers Forum |
| USBM | U.S. Bureau of Mines (Obsolete) |
| USCG | U.S. Coast Guard |
| USCTI | United States Cutting Tool Institute |
| USGA | United States Golf Association |
| USGBC | United States Green Building Council |
| USMA | U.S. Metric Association |
| USMMA | U.S.Magnetic Materials Association |
| USP | United States Pharmacopeial Convention |
| US PRO | U.S. Product Data Association (Obsolete) |
| USTCTBA | U.S. Tennis Court and Track Builders Association |
| UTE | Union Technique de l'Electricité et de la Communication |
| VAMAS | Versailles Project on Advanced Materials and Standards |
| VC | The Vision Council (ASC Z80) |
| VCCI | Voluntary Control Council for Interference by Information Technology Equipment |
| VDE | Association for Electrical, Electronic & Information Technologies |
| VI | Vinyl Institute |
| VICS | Voluntary Inter-Industry Communication Standards |
| VITA | VMEbus International Trade Association |
| VRCI | Variable Resistive Components Institute (Obsolete) |
| WAI | Wire Association International |
| WCLIB | West Coast Lumber Inspection Bureau |
| WCMA | Window Covering Manufacturers Association |
| WDMA | Window and Door Manufacturers Association |
| WEF | Water Environment Federation |
| WHO | World Health Organization |
| WIC | Woodwork Institute (Formerly Woodwork Institute of California) |
| WMMA | Wood Machinery Manufacturers of America |
| WMMPA | Wood Moulding and Millwork Producers Association |
| WMO | World Metrology Organization |
| WQA | Water Quality Association |
| WRC | Welding Research Council |
| WRI | Wire Reinforcement Institute |
| WSC | Water Systems Council |
| WWPA | Western Wood Products Association |
| WWPA | Woven Wire Products Association |