APLQ – Agence de presse libre du Quebec (left-wing news service)
BCN – Bank Canadian National
BU – Bolshevik Union
CALPA – Canadian Airline Pilots Association
CATCA – Canadian Air Traffic Control Association
CCF – Co-operative Commonwealth Federation (later to become the NDP)
CCL (M-L) – Canadian Communist League (Marxist-Leninist)
CEQ – Centrale des enseignants du Quebec (Quebec Teachers' Central)
CIA – Central Intelligence Agency
CLC – Canadian Labour Congress
CLM – Canadian Liberation Movement
CSD – Centrale des syndicats democratiques (Democratic Unions Central)
CNTU – Confederation of National Trade Unions
COMECON – Council of Mutual Economic Assistance
CP – Communist Party of Canada
CPC – Communist Party of China
CPC (M-L) – Communist Party of Canada (Marxist-Leninist)
CPL – Canadian Party of Labour
CPQ – Communist Party of Quebec
CPSU – Communist Party of the Soviet Union
ECU – European Currency Unit
EMF – European Monetary Fund
FLQ – Front de liberation du Quebec (Quebec Liberation Front)
GFR – German Federal Republic
GSTQ – Groupe socialiste des travailleurs du Quebec (Socialist Group of Quebec Workers)
IMF – International Monetary Fund
INCO – International Nickel Company
JBDS – James Bay Development Society
NATO – North Atlantic Treaty Organization
NDP – New Democratic Party
NORAD – North American Defence Command
NSFL – Nova Scotia Federation of Labour
LPP – Labour Progressive Party
OECD – Organization for Economic Co-operation and Development
PQ – Parti Quebecois
PLA – Party of Labour of Albania
PTQ – Parti des travailleurs du Quebec (Quebec Workers' Party)
QFL – Quebec Federation of Labour
PWM – Progressive Workers Movement
RCMP – Royal Canadian Mounted Police
RSC – Red Star Collective
RSDLP – Russian Social-Democratic Labour Party
RWL – Revolutionary Workers League
SOC – Socialist Organizing Committee (in Vancouver)
TLC – Trades and Labour Congress
U.S.S.R. – Union of Soviet Socialist Republic
U.S.A. – United States of America