List of 1990 Canadian incumbents

Crown

 * Head of State - Queen Elizabeth II

Federal government

 * Governor General - Jeanne Sauvé then Ray Hnatyshyn

Cabinet

 * Prime Minister - Brian Mulroney
 * Deputy Prime Minister - Don Mazankowski
 * Minister of Finance - Michael Wilson
 * Secretary of State for External Affairs - Joe Clark
 * Secretary of State for Canada - Gerry Weiner
 * Minister of National Defence - Bill McKnight
 * Minister of National Health and Welfare - Perrin Beatty
 * Minister of Industry, Science and Technology - Benoît Bouchard (position created February 23, 1990)
 * Minister of Regional Industrial Expansion - Harvie André (position discontinued February 22, 1990)
 * Minister of the Environment - Lucien Bouchard then Frank Oberle (interim) then Robert de Cotret
 * Minister of Justice - Doug Lewis then Kim Campbell
 * Minister of Transport - Benoît Bouchard then Doug Lewis
 * Minister of Communications - Marcel Masse
 * Minister of Fisheries and Oceans - Tom Siddon then Bernard Valcourt
 * Minister of Agriculture - Don Mazankowski
 * Minister of Public Works - Elmer MacKay
 * Minister of Employment and Immigration - Barbara McDougall
 * Minister of Indian Affairs and Northern Development - Pierre Cadieux then Tom Siddon
 * Minister of Energy, Mines and Resources - Jake Epp
 * Minister of Forestry - Frank Oberle (position was created on February 23, 1990)
 * Minister of Veterans Affairs - Gerry Merrithew

Parliament
See: 34th Canadian parliament

Party leaders

 * Progressive Conservative Party of Canada - Brian Mulroney
 * Liberal Party of Canada - John Turner then Jean Chrétien
 * Bloc Québécois - Lucien Bouchard (party first formed May 21, 1990)
 * New Democratic Party- Audrey McLaughlin
 * Reform Party of Canada - Preston Manning

Supreme Court Justices

 * Chief Justice: Brian Dickson then (from July 1) Antonio Lamer
 * Beverley McLachlin
 * Bertha Wilson
 * William Stevenson (arrived on September 17, to replace Lamer who had previously been promoted to Chief Justice)
 * Gérard V. La Forest
 * John Sopinka
 * Peter deCarteret Cory
 * Claire L'Heureux-Dubé
 * Charles D. Gonthier

Other

 * Speaker of the House of Commons - John Allen Fraser
 * Governor of the Bank of Canada - John Crow
 * Chief of the Defence Staff - General John de Chastelain

Premiers

 * Premier of Alberta - Don Getty
 * Premier of British Columbia - Bill Vander Zalm
 * Premier of Manitoba - Gary Filmon
 * Premier of New Brunswick - Frank McKenna
 * Premier of Newfoundland - Clyde Wells
 * Premier of Nova Scotia - John Buchanan then Roger Bacon
 * Premier of Ontario - David Peterson then Bob Rae
 * Premier of Prince Edward Island - Joe Ghiz
 * Premier of Quebec - Robert Bourassa
 * Premier of Saskatchewan - Grant Devine
 * Premier of the Northwest Territories - Dennis Patterson
 * Premier of Yukon - Tony Penikett

Lieutenant-governors

 * Lieutenant-Governor of Alberta - Helen Hunley
 * Lieutenant-Governor of British Columbia - David Lam
 * Lieutenant-Governor of Manitoba - George Johnson
 * Lieutenant-Governor of New Brunswick - Gilbert Finn
 * Lieutenant-Governor of Newfoundland and Labrador - James Aloysius McGrath
 * Lieutenant-Governor of Nova Scotia - Lloyd Roseville Crouse
 * Lieutenant-Governor of Ontario - Lincoln Alexander
 * Lieutenant-Governor of Prince Edward Island - Robert Lloyd George MacPhail then Marion Reid
 * Lieutenant-Governor of Quebec - Gilles Lamontagne then Martial Asselin
 * Lieutenant-Governor of Saskatchewan - Sylvia Fedoruk

Mayors

 * Toronto - Art Eggleton
 * Montreal - Jean Doré
 * Vancouver - Gordon Campbell
 * Ottawa - James A. Durrell

Religious leaders

 * Roman Catholic Bishop of Quebec - Cardinal Archbishop Louis-Albert Vachon then Archbishop Maurice Couture
 * Roman Catholic Bishop of Montreal - Cardinal Archbishop Paul Grégoire then Cardinal Archbishop Jean-Claude Turcotte
 * Roman Catholic Bishops of London - Bishop John Michael Sherlock
 * Moderator of the United Church of Canada - Sang Chul Lee then Walter H. Farquharson