| Subject | English | Thesaurus |
| commun. | Administrative Co-operation Group | ADCO |
| abbr., scottish | Agreement on Defence Co-operation | ADC |
| mil., abbr. | Assistant Secretary of Defense for Special Operations and Low Intensity Conflict | ASD (SO/LIC) |
| mil., abbr. | Assistant Secretary of Defense for Special Operations and Low-Intensity Conflicts | ASD/SOLIC |
| abbr., scottish | Automated Deep Operations Co-ordination System | ADOCS |
| ocean., abbr. | Automation of Field Operations and Services | AFOS |
| mil., abbr. | Base Operation Services | BOS |
| abbr., scottish | Canada-US Military Co-operation Community, US Section | MCC |
| abbr. | co-operation | co-op (Vosoni) |
| abbr., scottish | Co-operation Council for the Arab States of the Gulf | GCC |
| abbr., scottish | Conference on Security & Co-operation in Europe | CSCE |
| abbr., scottish | Conference on Security & Co-operation in the Mediterranean & Middle East | CSCM |
| abbr., scottish | Council for Security Co-operation in Asia-Pacific | CSCAP |
| abbr., scottish | Crisis Response Operations in NATO Open Systems programme | CRONOS |
| abbr., microel. | CW operation | continuous wave operation |
| abbr., scottish | Defence Co-operation Agreement | DCA |
| abbr., scottish | Defence Co-operation in Armaments | DCA |
| abbr., scottish | Defense & Economic Co-operation Agreement | DECA (USA) |
| abbr., foreig.aff. | European Steering Committee for Intergovernmental Co-operation in the Youth Field | CDEJ |
| abbr., scottish | Fleet Operations Programme | FOP |
| vet.med., abbr. | General Committee for Agricultural Co-operation in the European Union | COGECA |
| abbr., scottish | General Staff, Civil / Military Co-operation | G5 (British Army) |
| abbr., scottish | Georgia, Ukraine, Azerbaijan, Moldova regional co-operation group | GUAM |
| abbr., astronaut. | GMES services for Management of Operations, Situation Awareness and Intelligence for regional Crises | G-MOSAIC (semfromshire) |
| busin., abbr. | Gulf Co-operation Council | GCC |
| mil., logist. | high intensity operation | Operation whereby all operational functions are activated in order to face open violence from an enemy. (FRA) |
| avia., Canada | high intensity runway operations | Operations, used at very busy airports, that consist of optimizing separation of aircraft in final approach in order to minimize runway occupancy time (ROT) for both arriving and departing aircraft and to increase runway capacity |
| abbr., microel. | IF-THEN operation | conditional implication operation |
| abbr., scottish | Industrial Co-operation Agreement | ICA |
| abbr., scottish | Interdepartmental Commission on Military-Technical Co-operation | ICMTC (Russia) |
| abbr., scottish | International Bank for Economic Co-operation | IBEC |
| vet.med., abbr. | International Co-operation on Harmonisation | ICH (of Technical Requirements for the Registration of Veterinary Medicinal Products) |
| abbr., scottish | Land Operations Command Systems programme | LOCS (British Army) |
| abbr., scottish | Lockheed Space Operations Co. | LSOC (USA) |
| abbr., scottish | Lockheed Technical Operations Co. | LTOC (USA) |
| mil., logist. | low intensity operation | Operation whereby only a part of the operational functions are activated in order to face a situation with little coercion, within the framework of violence control, but which does not preclude the use of firearms. (FRA) |
| abbr., scottish | Main Administration for Military-Technical Co-operation | MAMTC (Russia) |
| mil., logist. | medium intensity operation | Operation in which all or part of the operational functions are activated in order to counter an obvious or expressed violence from the part of the enemy. (FRA) |
| gen. | memo of co-operation | MoC (MichaelBurov) |
| gen. | memo on co-operation | MoC (MichaelBurov) |
| gen. | memorandum of co-operation | MoC (MichaelBurov) |
| gen. | memorandum on co-operation | MoC (MichaelBurov) |
| abbr., astronaut. | Middle Atmosphere Co-operation programme | MAC |
| abbr., scottish | Middle East Regional Co-operation for Development | RCD |
| abbr., scottish | Military Technical Co-operation | MTC |
| abbr., scottish | Northeast Asian Co-operation Dialogue | NACD |
| abbr., int.rel. | Northern Ireland Co-operation Overseas | NICO (Ker-online) |
| energ.ind., abbr. | Operation Reliability Analysis Program | ORAP |
| ocean., abbr. | Operations System Development Program | OSDP |
| abbr., scottish | Organisation Africaine et Malgache de Co-operation Economique | OAMCE |
| abbr., scottish | Organisation for Economic Co-operation & Development | OECD |
| abbr., scottish | Organisation for European Economic Co-operation | OEEC (Now OECD) |
| abbr. | Organization for Economic Co-operation and Development | OECD |
| UN, abbr. | Organization for Security and Co-operation in Europe | OSCE |
| abbr., pharma. | Pharmaceutical Inspection Co-operation Scheme | PIC/S (Система сотрудничества по фармацевтическим инспекциям kat_j) |
| abbr. | Program Operations | PO (Alex Lilo) |
| abbr. | Programme and Operations Policies and Procedures | POPP (UNDP Ufel Trabel) |
| gen. | protocol of co-operation | MoC (MichaelBurov) |
| gen. | protocol on co-operation | MoC (MichaelBurov) |
| abbr. | Risk and Operations Services Agreement | ROSA (нефть и газ Leonid Dzhepko) |
| abbr. | Science Co-operation Office for South-East Asia | SEASCO |
| abbr., scottish | South Pacific Bureau for Economic Co-operation | SPEC |
| abbr., scottish | Special Operations & Low Intensity Conflict | SOLIC (Symposium & Exhibition) |
| mil., abbr. | Special Operations/Low Intensity Conflict | SO/LIC |
| mil., abbr. | Special Operations Program Executive Officer | SOPEO |
| mil., abbr. | Special Operations Program Manager | SOPM |
| mil., abbr. | Special Operations Training Program | SOTP |
| busin., abbr. | Technology Operations And Property Services | TOPS |
| transp., abbr. | Transport Operations Programs for Increasing Capacity and Safety | TOPICS |
| abbr., scottish | Trilateral Frigate Co-operation | TFC (Netherlands, Germany and Spain) |
| abbr., scottish | Union Africaine et Malgache de Co-operation Economique | UAMCE |
| vet.med., abbr. | Veterinary International Co-operation on Harmonization | VICH (of Technical Requirements for the Registration of Veterinary Medicinal Products - EU) |
| telecom., abbr. | Washington Telecommunications Services and Operations | WTSO |
| tradem., abbr. | Waste Management Federal Services, Inc., Northwest Operations | WMNW |
