National Organizations
- The International Organization for Standardization (ISO)
- International Accreditation Forum (IAF)
- International Laboratory Accreditation Cooperation (ILAC)
- Organization for Economic Co-operation and Development (OECD)
- Standardizing Information and Communication Systems (ECMA)
- Bureau International des Poids et Mesures (BIPM)
- International Organization of Legal Metrology (OIML)
- International Society for Automation (ISA)
- International Electrotechnical Comission (IEC)
- AOAC International (AOAC)
Regional Co-operations
- Asia Pacific Laboratory Accreditation Cooperation (APLAC)
- Asia-Pacific Legal Metrology Forum (APLMF)
- Inter American Accreditation Cooperation (IAAC)
- Joint Accreditation System, Australia & New Zealand (JAS-ANZ)
- Comisión Panamericana de Normas Técnicas (COPANT)
- Southern African Development Community in Accreditation (SADCA)
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)
- Institute of Electrical and Electronics Engineers Standards (IEEE)
Europe
- European Union (EC)
- European Comittee for Standardization (CEN)
- European Accreditation (EA)
- European Organization for Quality (EOQ)
- Eco Management and Audit Scheme (EMAS)
- European Committee for Electrotechnical Standardization (CENELEC)
- EURACHEM
- EUROLAB
- European Telecommunications Standards Institute (ETSI)
- European Network of Forensic Science Institute (ENFSI)
- European Cooperation in Legal Metrology (WELMEC)
Americas
- Electronic Industries Association (EIA)
- The American National Standards Institute (ANSI)
- The American Society for Testing and Materials (ASTM)
- International Association of Radio and Telecommunications Engineers
- Clinical Laboratory Standards Institute (CLSI)
- The National Environmental Laboratory Accreditation Conference Institute
- Institute of Measurement and Control (IMC
