| AA | Anti-Aircraft |
| AAA | Agricultural Adjustment Act (US) |
| ACND | Advisory Committee on Northern Development |
| ADC | Air Defense Command |
| AEC | Atomic Energy Commission (US) |
| AECB | Atomic Energy Control Board |
| AECL | Atomic Energy of Canada Limited |
| AFP | Agence France-Presse |
| AOC | Air Officer Commanding |
| AP | Associated Press |
| AR(Q) | Annual Review (Questionnaire) (NATO) |
| AT | Anti-Tank |
| ATAF | Allied Tactical Air Force (NATO) |
| ATC | Air Traffic Control |
| AWX | All Weather Aircraft Interceptor |
| BADGE | Basic Air Defence Ground Environment |
| BCFK | British Commonwealth Forces Korea |
| BENELUX | Belguim, Netherlands, Luxembourg |
| BJSM | British Joint Staff Mission (Washington) |
| BOMARC | Boeing-Michigan Aeronautical Centre |
| BUP | British United Press |
| BWI | British West Indies |
| CANAC | Permanent Delegation of Canada to the North Atlantic Council |
| CANDEL | Canadian Delegation to the General Assembly of United Nations |
| CAS | Chief of Air Staff |
| CBC(-IS) | Canadian Broadcasting Corporation(-International Service) |
| CCC | Commercial Cable Company |
| CCC | Commodity Credit Corporation (US) |
| CCF | Cooperative Commonwealth Federation |
| CCOS | Chairman, Chiefs of Staff |
| CDU | Christlich-Demokratische Union (Christian-Democratic Union) |
| CFS | Cubic Foot per Second |
| CGE | Canadian General Electric Company Limited |
| CHINCOM | China Committee of the Paris Consultative Committee |
| CIA | Central Intelligence Agency (US) |
| CIGS | Chief of the Imperial General Staff (UK) |
| CINCUNC | Commander-in-Chief, United Nations Command |
| CISC | Commission Internationale de Surveillance et de contrôle |
| CJS | Canadian Joint Staff (Washington) |
| COCOM | Coordinating Committee on Export Controls |
| CONAD | Continental Air Defence Command |
| CP | Canadian Press |
| CPC | Combined Policy Committee (Canada-UK-US) |
| CPDUN | Canadian Permanent Delegation to United Nations |
| CRC | Control and Reporting Centre |
| CRO | Commonwealth Relations Office (UK) |
| CRP | Control and Reporting Post |
| DDP | Department of Defence Production |
| DEA | Department of External Affairs |
| DEW | Distant Early Warning |
| DL(1) | Defence Liaison (1) Division |
| DND | Department of National Defence |
| DOT | Department of Transport |
| DRB | Defence Research Board |
| DRVN | Democratic Republic of Vietnam |
| DWS | Diplomatic Wireless Service (UK) |
| ECAFE | Economic Commission for Asia and the Far East (UN) |
| ECE | Economic Commission for Europe (UN) |
| ECM | Electronic Counter-Measure |
| ECOSOC | Economic and Social Council of United Nations |
| ECSC | European Coal and Steel Community |
| EDC | European Defence Community |
| EF | European Fund |
| EPU | European Payments Union |
| ETAP | Expanded Technical Assistance Program (UN) |
| EW/GCI | Early Warning/Ground Control Intercept |
| FAO | Food and Agriculture Organization |
| FFPL | Fighting Forces of the Pathet Lao |
| FL | French Liaison |
| FO | Foreign Office (UK) |
| FOA | Foreign Operations Administration (US) |
| FOB | Free on Board |
| FPC | Federal Power Commission (US) |
| FUF | French Union Forces |
| FUPL | Fighting Units of the Pathel Lao |
| GATT | General Agreement on Tariffs and Trade |
| HMCS | Her Majesty's Canadian Ship |
| HR | House of Representatives (US) |
| IBRD | International Bank for Reconstruction and Development |
| ICAO | International Civil Aviation Organization |
| ICBM | Intercontinential Ballistic Missile |
| ICS | Indian Civil Service |
| ICSC | International Commission for Supervision and Control |
| IDF | Interceptor Day Fighter |
| IFC | International Finance Corporation (UN) |
| IJC | International Joint Commission (Canada-US) |
| IMF | International Monetary Fund |
| ITO | International Trade Organization |
| IWA | International Wheat Agreement |
| JCS | Joint Chiefs of Staff (US) |
| JIC | Joint Intelligence Committee |
| JIMC | Joint Industrial Mobilization Committee (Canada-US) |
| JPC | Joint Planning Committee |
| KRF | Khmer Resistance Forces |
| KWH | Kilowatt Hour |
| LNA | Laotian National Army |
| LOFAR | Low Frequency Acquisition and Ranging; Low Frequency Analysis and Recording |
| MAA | Military Assistance Agreement (US) |
| MAAG | Military Assistance Advisory Group (US) |
| MAC | Military Armistice Commission |
| MAE | Ministère des Affaires Extérieures |
| MC | Military Committee (NATO) |
| MCC | Military Cooperation Committee (Canada-United States) |
| MDAP | Mutual Defence Assistance Program (US) |
| MEDO | Middle East Defence Organization |
| MFN | Most Favoured Nation |
| MRC | Military Representatives Committee (NATO) |
| MSA | Mutual Security Act (US) |
| MSG | Military Study Group (Canada-US) |
| NANR | Northern Affairs and Natural Resources |
| NATO | North Atlantic Treaty Organization |
| NCSM | Navire Canadien de Sa Majesté |
| NEACC | Near East Arms Coordinating Committee |
| NNRC | Neutral Nations Repatriation Commission |
| NNSC | Neutral Nations Supervisory Commission |
| NRU | Nuclear Research Universal |
| NRX | Nuclear Research Experimental |
| NYC | New York Central Railroad |
| ODASE | Organisation de défense de l'Asie du sud-est |
| ODM | Office of Defense Mobilization (US) |
| OEEC | Organization for European Economic Cooperation |
| OFAR | Office of Foreign Agricultural Relations (US) |
| OTAN | Organisation du Traité de l'Atlantique Nord |
| OTC | Organization for Trade Cooperation (GATT) |
| PASNY | Power Authority of the State of New York |
| PAVN | People's Army of Vietnam |
| PC(O) | Privy Council (Office) |
| PERMDEL | Permanent Delegation of Canada to the United Nations, New York |
| PJBD | Permanent Joint Board on Defence (Canada-US) |
| PL | Pathet Lao |
| POL | Petroleum, Oil, Lubricants |
| PVV/PL | People's Vietnamese Volunteers/Pathet Lao |
| QR | Quantitative Restrictions |
| RCAF | Royal Canadian Air Force |
| RCMP | Royal Canadian Mounted Police |
| RCN (R) | Royal Canadian Navy (Reserve) |
| RLG | Royal Laotian Government |
| RNZASC | Royal New Zealand Army Service Corps |
| ROK | Republic of Korea |
| SAC | Strategic Air Command (US) |
| SACEUR | Supreme Allied Commander, Europe (NATO) |
| SACLANT | Supreme Allied Commander, Atlantic (NATO) |
| SAGE | Semi-automatic ground environment |
| 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) |
| SRC | Societé Radio Canada |
| SUNFED | Special United Nations Fund for Economic Development |
| TAC | Technical Assistance Committee (UN) |
| TAC | Trade Agreements Committee (GATT) |
| TCA | Trans-Canada Airlines |
| UK | United Kingdom |
| UN | United Nations |
| UNESCO | United Nations Educational, Scientific and Cultural Organization |
| UNICEF | United Nations Children's Fund (anciennement/formerly United Nations International Children's Emergency Fund) |
| UNKRA | United Nations Korean Reconstruction Agency |
| UNREF | United Nations Refugee Fund |
| UNRPR | United Nations Relief for Palestine Refugees |
| UNRWA(PR) | United Nations Relief and Works Agency (for Palestine Refugees) |
| UNTAB | United Nations Technical Assistance Bureau |
| UNTSO | United Nations Truce Supervisory Organization |
| UP | United Press |
| US | United States |
| USAF | United States Air Force |
| USDA | United States Department of Agriculture |
| USSR | Union of Soviet Socialist Republics |
| VHF | Very High Frequency |
| WEU | Western European Union |
| WHO | World Health Organization |