| APAC | Asia Pacific Laboratory Accreditation Cooperation |
| APLMF | Asia-Pacific Legal Metrology Forum |
| APMP | Asia Pacific Metrology Program |
| BIML | International Bureau of Legal Metrology |
| BIPM | International Bureau of Weights and Measures |
| CAC-MAS-Q | Central Asian Cooperation on Metrology Accreditation and Quality |
| CC | Certificate of Conformity |
| CD | Committee Draft |
| CGPM | General Conference on Weights and Measures |
| CIPM | International Committee for Weights and Measures |
| COOMET | Euro-Asian Cooperation of National Metrological Institutions |
| CPR | Committee on Participation Review |
| DD | Draft Document |
| DoMC | Declaration of Mutual Confidence |
| DR | Draft Recommendation |
| EA | European Cooperation for Accreditation |
| EMLMF | Euro-Mediterranean Legal Metrology Forum |
| EUROMET | European Collaboration in Measurement Standards |
| IAAC | Inter-American Accreditation Cooperation |
| IAF | International Accreditation Forum |
| IEC | International Electrotechnical Commission |
| IFCC | International Federation of Clinical Chemistry |
| ILAC | International Laboratory Accreditation Cooperation |
| ISO | International Organization for Standardization |
| IUPAP | International Union of Pure and Applied Physics |
| MAA | Mutual Acceptance Agreement |
| MLA | Multilateral Recognition Arrangements |
| MRA | Mutual Recognition Arrangements |
| NCWM | National Conference on Weights and Measures |
| NIST | National Institute of Standards and Technology |
| NMIs | National Metrology Institutes |
| NTEP | National Type Evaluation Program |
| OAS | Organization of American States |
| OIML | International Organization of Legal Metrology |
| PAC | Pacific Accreditation Cooperation |
| PG | Project Group |
| R | Recommendation |
| RLAOs | Regional Laboratory Accreditation Organizations |
| RLMOs | Regional Legal Metrology Organizations |
| RMOs | Regional Metrology Organizations |
| SADCA | Southern African Development Community in Accreditation |
| SADCMET | Southern African Community Cooperation in Measurement Traceability |
| SC | Technical Subcommittee |
| SI | International System of Units |
| SIM | Inter-American Metrology System |
| SIM-LMWG | Inter-American Metrology System - Legal Metrology Working Group |
| TC | Technical Committee |
| UNIDO | United Nations Industrial Development Organization |
| WD | Working Draft |
| WELMEC | European Cooperation in Legal Metrology |
| WTO | World Trade Organization |