| AA | Anti-Aircraft |
| AAA | Agricultural Adjustment Act |
| ABC | America, Britain, Canada |
| ADC | Air Defense Command |
| AEC | Atomic Energy Commission |
| AECL | Atomic Energy of Canada Limited |
| AOC | Air Officer Commanding |
| BBC | British Broadcasting Corporation |
| BOAC | British Overseas Airways Corporation |
| BTO | Brussels Treaty Organization |
| CANAC | Permanent Delegation of Canada to the North Atlantic Council, Paris |
| CANDEL | Canadian Delegation to the General Assembly of United Nations, New York |
| CAS | Chief of Air Staff |
| CBC-IS | Canadian Broadcasting Corporation-International Service |
| CCC | Commercial Cable Company |
| CCC | Commodity Credit Corporation (US) |
| CCOS | Chairman, Chiefs of Staff |
| CCF | Cooperative Commonwealth Federation |
| CERN | Conseil Européen de Recherches Nucléaires |
| CG | Consultative Group (COCOM) |
| CHICOM | China Committee on Export Controls |
| CIGS | Chief of the Imperial General Staff |
| CINCUNC | Commander-in-Chief, United Nations Command |
| COCOM | Coordinating Committee on Export Controls |
| COTC | Canadian Overseas Telecommunications Corporation |
| CPC | Combined Policy Committee (Canada-UK-US) |
| CPDUN | Canadian Permanent Delegation to United Nations |
| CRO | Commonwealth Relations Office (UK) |
| CUSRPG | Canada-United States Regional Planning Group |
| CUSSAT | Canada-United States Scientific Advisory Team |
| CVE | Aircraft Carrier, Escort |
| CVL | Aircraft Carrier, Little |
| CVS | Aircraft Carrier, Seaplanes |
| DDP | Department of Defence Production |
| DEW | Distant Early Warning |
| DL(1) | Defence Liaison (1) Division |
| DOT | Department of Transport |
| DRB | Defence Research Board |
| DWS | Diplomatic Wireless Service (UK) |
| EASTLANT | Eastern Atlantic Area |
| ECM | Electronic Counter-Measure |
| ECOSOC | Economic and Social Council of United Nations |
| EDC | European Defence Community |
| EPU | European Payments Union |
| ETAP | Expanded Technical Assistance Program (UN) |
| FAO | Food and Agriculture Organization |
| FOA | Foreign Operations Administration (US) |
| FPC | Federal Power Commission (US) |
| GATT | General Agreement on Tariffs and Trade |
| GCI | Ground Controlled Interceptor |
| GM | Guided Missile |
| GRT | Gross Registered Tons |
| GSA | General Service Administration (US) |
| HMG | Her Majesty's Government |
| IBRD | International Bank for Reconstruction and Development |
| ICAO | International Civil Aviation Organization |
| ICETP | Interdepartmental Committee on External Trade Policy |
| IFC | International Finance Corporation (UN) |
| IJC | International Joint Commission (Canada-US) |
| IMF | International Monetary Fund |
| ITO | International Trade Organization |
| IWA | International Wheat Agreement |
| JIC | Joint Intelligence Committee |
| JPC | Joint Planning Committee |
| KGB | Komitet Gossudarstvennoi Bezopasnosti [Committee of State Security] (USSR) |
| LCM | Landing Craft, Mechanized |
| LCT | Landing Craft, Tank |
| MAAG | Military Assistance Advisory Group (US) |
| MAC | Military Armistice Commission |
| MC | Military Committee (NATO) |
| MCC | Military Cooperation Committee (Canada-United States) |
| MDAP | Mutual Defence Assistance Program (US) |
| MEDO | Middle East Defence Organization |
| MITI | Ministry of International Trade and Industry (Japan) |
| MRC | Military Representatives Committee (NATO) |
| MSA | Mutual Security Act (US) |
| MSG | Military Study Group (Canada-US) |
| MVD | Ministerstvo Vnutrennykh Del [Minister of Internal Affairs] (USSR) |
| NATO | North Atlantic Treaty Organization |
| NKVD | Narodnyi Kommissariat Vnutrennikh Del [People's Commissariat of Internal Affairs ] (USSR) |
| NNRP | Neutral Nations Repatriation Commission |
| NNSC | Neutral Nations Supervisory Commission |
| OAS | Organization of American States |
| ODM | Office of Defense Mobilization (US) |
| OEEC | Organization for European Economic Cooperation |
| OFAR | Office of Foreign Agricultural Relations (US) |
| OTAN | Organization du Traité de l'Atlantic Nord |
| PC | Participating Countries (COCOM) |
| PC | Privy Council |
| PERMDEL | Permanent Delegation of Canada to the United Nations, New York |
| PJBD | Permanent Joint Board on Defence (Canada-US) |
| PRO | Public Relations Officer (ICSC) |
| PVV/PL | People's Vietnamese Volunteers/Pathet Lao |
| QR | Quantitative Restrictions |
| RAF | Royal Air Force |
| RCAF | Royal Canadian Air Force |
| RCMP | Royal Canadian Mounted Police |
| RCN | Royal Canadian Navy |
| ROK | Republic of Korea |
| SAC | Strategic Air Command |
| SACEUR | Supreme Allied Commander, Europe (NATO) |
| SACLANT | Supreme Allied Commander, Atlantic (NATO) |
| SEADO | South East Asia Defence Organization |
| SEATO | South East Asia Treaty Organization |
| SG | Standing Group (NATO) |
| SGLO | Standing Group Liaison Officer (NATO) |
| SHAPE | Supreme Headquarters, Allied Powers, Europe (NATO) |
| SPD | Sozialdemokratische Partei Deutschlands |
| SUNFED | Special United Nations Fund for Economic Development |
| UHF | Ultra High Frequency |
| UK | United Kingdom |
| UN | United Nations |
| UNC | United Nations Command |
| UNCURK | United Nations Commission for Reunification and Rehabilitation of Korea |
| UNESCO | United Nations Educational, Scientific and Cultural Organization |
| UNICEF | United Nations International Emergency Children's Fund |
| UNKRA | United Nations Korean Reconstruction Agency |
| UNRWA(PR) | United Nations Relief and Works Agency (for Palestine Refugees) |
| US | United States |
| USAF | United States Air Force |
| USIS | United States Information Service |
| USN | United States Navy |
| USSR | Union of Socialist Soviet Republics |
| VHF | Very High Frequency |
| WHO | World Health Organization |
| WP | Western Pacific Railroad Company |