| AEC | ATOMIC ENERGY COMMISSION (UNITED NATIONS) |
| AP | ASSOCIATED PRESS |
| BENELUX | BELGIUM, THE NETHERLANDS, LUXEMBOURG |
| BOAC | BRITISH OVERSEAS AIRWAYS CORPORATION |
| CBC [IS] | CANADIAN BROADCASTING CORPORATION [INTERNATIONAL SERVICE] |
| CCA | COMMISSION FOR CONVENTIONAL ARMAMENTS |
| CCTT | INTERNATIONAL TELEGRAPH CONSULTATIVE COMMITTEE |
| CDC | CABINET DEFENCE COMMITTEE |
| CEEC | COMMITTEE ON EUROPEAN ECONOMIC COOPERATION |
| CFM | COUNCIL OF FOREIGN MINISTERS |
| Cominform | COMMUNIST INFORMATION BUREAU |
| CPA(L) | CANADIAN PACIFIC AIRLINES |
| CPC | COMBINED POLICY COMMITTEE |
| CPCAD | COMMISSION PERMANENTE CANADO-AMÉRICAINE DE DEFENSE |
| CRO | COMMONWEALTH RELATIONS OFFICE |
| DP | DISPLACED PERSON |
| ECA | ECONOMIC COOPERATION ADMINISTRATION (UNITED STATES) |
| ECE | ECONOMIC COMMISSION FOR EUROPE |
| ECOSOC | ECONOMIC AND SOCIAL COUNCIL OF THE UNITED NATIONS |
| ERP | EUROPEAN RECOVERY PROGRAMME |
| FAO | FOOD AND AGRICULTURE ORGANIZATION |
| FEC | FAR EASTERN COMMISSION |
| FO | FOREIGN OFFICE |
| FRIS | FOREIGN RELATIONS OF THE UNITED STATES |
| GATT | GENERAL AGREEMENT ON TARIFFS AND TRADE/ACCORD GÉNÉRAL |
| ICAO | INTERNATIONAL CIVIL AVIATION ORGANIZATION |
| ICE? | INTERNATIONAL CHILDREN'S EMERGENCY FUND |
| IDB | INDUSTRIAL DEFENCE BOARD |
| IEEC | INTERNATIONAL EMERGENCY FOOD COUNCIL |
| IJC | INTERNATIONAL JOINT COMMISSION |
| IMF | INTERNATIONAL MONETARY FUND |
| IRO | INTERNATIONAL REFUGEE ORGANIZATION |
| ITO | INTERNATIONAL TRADE ORGANIZATION |
| JIB | JOINT INTELLIGENCE BOARD |
| JIC | JOINT INTELLIGENCE COMMITTEE |
| KC | KILOCYCLE |
| MEN | MOST FAVOURED NATION |
| NRC | NATIONAL RESEARCH COUNCIL |
| OACI | ORGANISATION DE L'AVIATION CIVILE INTERNATIONALE |
| ()EEC | ORGANIZATION FOR EUROPEAN ECONOMIC CO-OPERATION |
| ONU | ORGANISATION DES NATIONS UNIES |
| PC(0) | PRIVY COUNCIL (OFFICE) |
| PCIRO | PREPARATORY COMMISSION OF INTERNATIONAL REFUGEE ORGANIZATION |
| PJBD | PERMANENT JOINT BOARD ON DEFENCE |
| RAF | ROYAL AIR FORCE |
| RCAF | ROYAL CANADIAN AIR FORCE |
| RCMP | ROYAL CANADIAN MOUNTED POUCE |
| RCN | ROYAL CANADIAN NAVY |
| RFC | RECONSTRUCTION FINANCE CORPORATION |
| SCAT | SUPREME COMMANDER, ALLIED POWERS, PACIFIC |
| SHAEF | SUPREME HEADQUARTERS, ALLIED EXPEDITIONARY FORCE |
| TCA | TRANS-CANADA AIRLINES |
| UK | UNITED KINGDOM |
| UN | UNITED NATIONS |
| UNAEC | UNITED NATIONS ATOMIC ENERGY COMMISSION |
| UNESCO | UNITED NATIONS EDUCATIONAL, SCIENTIFIC AND CULTURAL ORGANIZATION |
| UNRRA | UNITED NATIONS RELIEF AND REHABILITATION ADMINISTRATION |
| UNTCOK | UNITED NATIONS TEMPORARY COMMISSION ON KOREA |
| US(A) | UNITED STATES (OF AMERICA) |
| USAF | UNITED STATES AIR FORCE |
| USSR | UNION OF SOVIET SOCIALIST REPUBLICS |
| WHO | WORLD HEALTH ORGANIZATION |