Crown Head of State - Queen Elizabeth II Federal government Governor General - Edward Schreyer then Jeanne Sauvé Liberal cabinet - to September 16 Prime Minister - Pierre Trudeau then John Turner Deputy Prime Minister - Allan MacEachen then Jean Chrétien Minister of Finance - Marc Lalonde Secretary of State for External Affairs - Allan MacEachen then Jean Chrétien Secretary of State for Canada - Serge Joyal Minister of National Defence - Jean-Jacques Blais Minister of National Health and Welfare - Monique Bégin Minister of Regional Industrial Expansion - Ed Lumley Minister of the Environment - Charles Caccia Minister of Justice - Mark MacGuigan then Donald Johnston Minister of Transport - Lloyd Axworthy Minister of Communications - Francis Fox then Ed Lumley Minister of Fisheries and Oceans - Pierre de Bané then Herb Breau Minister of Agriculture - Eugene Whelan then Ralph Ferguson Minister of Public Works - Roméo LeBlanc then Charles Lapointe Minister of Employment and Immigration - John Roberts Minister of Indian Affairs and Northern Development - John Munro then Doug Frith Minister of Energy, Mines and Resources - Charles Caccia then Gerald Regan Minister of State (Forestry) - Gerald Merrithew Progressive Conservative cabinet - from September 17 Prime Minister - Brian Mulroney Deputy Prime Minister - Erik Nielsen Minister of Finance - Michael Wilson Secretary of State for External Affairs - Joe Clark Secretary of State for Canada - Walter McLean Minister of National Defence - Robert Coates Minister of National Health and Welfare - Jake Epp Minister of Regional Industrial Expansion - Sinclair Stevens Minister of the Environment - Suzanne Blais-Grenier Minister of Justice - John Crosbie Minister of Transport - Don Mazankowski Minister of Communications - Marcel Masse Minister of Fisheries and Oceans - John Fraser Minister of Agriculture - John Wise Minister of Public Works - Roch La Salle Minister of Employment and Immigration - Flora MacDonald Minister of Indian Affairs and Northern Development - David Crombie Minister of Energy, Mines and Resources - Pat Carney Parliament See: 32nd Canadian parliament then 33rd Canadian parliament Party leaders Liberal Party of Canada - Pierre Trudeau then John Turner New Democratic Party- Ed Broadbent Progressive Conservative Party of Canada - Brian Mulroney Supreme Court Justices Chief Justice: Bora Laskin then Brian Dickson William McIntyre Bertha Wilson Antonio Lamer Gerald Eric Le Dain (sworn in May 5) Roland Almon Ritchie (until October 30) John Sopinka Jean Beetz