# 18th Canadian Ministry

The Eighteenth Canadian Ministry was the cabinet chaired by Prime Minister John Diefenbaker. It governed Canada from 21 June 1957 to 22 April 1963, including all of the 23rd, 24th, and 25th Canadian Parliaments. The government was formed by the Progressive Conservative Party of Canada.

## Ministers

| Portfolio | Minister | Term | Term |
| Portfolio | Minister | Start | End |
| Prime Minister | John Diefenbaker | 21 June 1957 | 22 April 1963 |
| Minister of Agriculture | Douglas Harkness | 21 June 1957 | 11 October 1960 |
| Minister of Agriculture | Alvin Hamilton | 11 October 1960 | 22 April 1963 |
| Minister of Amateur Sport | Jay Monteith | 29 September 1961 | 22 April 1963 |
| Minister for Canada Mortgage and Housing Corporation | Howard Charles Green | 21 June 1957 | 20 August 1959 |
| Minister for Canada Mortgage and Housing Corporation | David James Walker | 20 August 1959 | 18 July 1962 |
| Minister for Canada Mortgage and Housing Corporation | Howard Charles Green (acting) | 18 July 1962 | 9 August 1962 |
| Minister for Canada Mortgage and Housing Corporation | Davie Fulton | 9 August 1962 | 22 April 1963 |
| Minister for the Canadian Wheat Board | Gordon Churchill | 21 June 1957 | 11 October 1960 |
| Minister for the Canadian Wheat Board | Alvin Hamilton | 11 October 1960 | 22 April 1963 |
| Minister of Citizenship and Immigration | Davie Fulton (acting) | 21 June 1957 | 12 May 1958 |
| Minister of Citizenship and Immigration | Ellen Fairclough | 12 May 1958 | 9 August 1962 |
| Minister of Citizenship and Immigration | Dick Bell | 9 August 1962 | 22 April 1963 |
| Minister for Defence Construction Limited | Howard Charles Green (acting) | 21 June 1957 | 12 May 1958 |
| Minister for Defence Construction Limited | Raymond O'Hurley | 12 May 1958 | 22 April 1963 |
| Minister of Defence Production | Howard Charles Green (acting) | 21 June 1957 | 12 May 1958 |
| Minister of Defence Production | Raymond O'Hurley | 12 May 1958 | 22 April 1963 |
| Secretary of State for External Affairs | John Diefenbaker | 21 June 1957 | 13 September 1957 |
| Secretary of State for External Affairs | Sidney Earle Smith | 13 September 1957 | 17 March 1959 |
| Secretary of State for External Affairs | John Diefenbaker (acting) | 17 March 1959 | 4 June 1959 |
| Secretary of State for External Affairs | Howard Charles Green | 4 June 1959 | 22 April 1963 |
| Minister of Finance and Receiver General | Donald Fleming | 21 June 1957 | 9 August 1962 |
| Minister of Finance and Receiver General | George Nowlan | 9 August 1962 | 22 April 1963 |
| Minister of Fisheries | Angus MacLean | 21 June 1957 | 22 April 1963 |
| Minister of Forestry | Hugh John Flemming | 11 October 1960 | 18 March 1963 |
| Minister of Forestry | Martial Asselin | 18 March 1963 | 22 April 1963 |
| Minister responsible for Indian Affairs | Davie Fulton (acting) | 21 June 1957 | 12 May 1958 |
| Minister responsible for Indian Affairs | Ellen Fairclough | 12 May 1958 | 9 August 1962 |
| Minister responsible for Indian Affairs | Dick Bell | 9 August 1962 | 22 April 1963 |
| Minister of Justice and Attorney General | Davie Fulton | 21 June 1957 | 9 August 1962 |
| Minister of Justice and Attorney General | Donald Fleming | 9 August 1962 | 22 April 1963 |
| Minister of Labour | Michael Starr | 21 June 1957 | 22 April 1963 |
| Leader of the Government in the House of Commons | Howard Charles Green | 21 June 1957 | 14 January 1960 |
| Leader of the Government in the House of Commons | Gordon Churchill | 14 January 1960 | 22 April 1963 |
| Leader of the Government in the Senate | John Thomas Haig | 21 June 1957 | 12 May 1958 |
| Minister of Mines and Technical Surveys | Léon Balcer (acting) | 21 June 1957 | 7 August 1957 |
| Minister of Mines and Technical Surveys | Paul Comtois | 7 August 1957 | 6 October 1961 |
| Minister of Mines and Technical Surveys | Walter Dinsdale (acting) | 6 October 1961 | 28 December 1961 |
| Minister of Mines and Technical Surveys | Jacques Flynn | 28 December 1961 | 18 July 1962 |
| Minister of Mines and Technical Surveys | Hugh John Flemming (acting) | 18 July 1962 | 9 August 1962 |
| Minister of Mines and Technical Surveys | Paul Martineau | 9 August 1962 | 22 April 1963 |
| Minister for National Capital Commission | David James Walker | 20 August 1959 | 18 July 1962 |
| Minister for National Capital Commission | Howard Charles Green (acting) | 18 July 1962 | 9 August 1962 |
| Minister for National Capital Commission | Davie Fulton | 9 August 1962 | 22 April 1963 |
| Associate Minister of National Defence | Vacant | 21 June 1957 | 20 August 1959 |
| Associate Minister of National Defence | Pierre Sévigny | 20 August 1959 | 8 February 1963 |
| Associate Minister of National Defence | Vacant | 8 February 1963 | 22 April 1963 |
| Minister of National Defence | George Pearkes | 21 June 1957 | 11 October 1960 |
| Minister of National Defence | Douglas Harkness | 11 October 1960 | 4 February 1963 |
| Minister of National Defence | Vacant (Elgin B. Armstrong was acting) | 4 February 1963 | 12 February 1963 |
| Minister of National Defence | Gordon Churchill | 12 February 1963 | 22 April 1963 |
| Minister of National Health and Welfare | Alfred Johnson Brooks (acting) | 21 June 1957 | 22 August 1957 |
| Minister of National Health and Welfare | Jay Monteith | 22 August 1957 | 22 April 1963 |
| Minister of National Revenue | George Nowlan | 21 June 1957 | 9 August 1962 |
| Minister of National Revenue | Hugh John Flemming | 9 August 1962 | 22 April 1963 |
| Minister of Northern Affairs and National Resources | Douglas Harkness | 21 June 1957 | 22 August 1957 |
| Minister of Northern Affairs and National Resources | Alvin Hamilton | 22 August 1957 | 11 October 1960 |
| Minister of Northern Affairs and National Resources | Walter Dinsdale | 11 October 1960 | 22 April 1963 |
| Postmaster General | William McLean Hamilton | 21 June 1957 | 18 July 1962 |
| Postmaster General | Angus MacLean (acting) | 18 July 1962 | 9 August 1962 |
| Postmaster General | Ellen Fairclough | 9 August 1962 | 22 April 1963 |
| President of the Queen's Privy Council | John Diefenbaker | 21 June 1957 | 28 December 1961 |
| President of the Queen's Privy Council | Noël Dorion | 28 December 1961 | 5 July 1962 |
| President of the Queen's Privy Council | John Diefenbaker (acting) | 5 July 1962 | 21 December 1962 |
| President of the Queen's Privy Council | John Diefenbaker | 21 December 1962 | 22 April 1963 |
| Minister of Public Works | Howard Charles Green | 21 June 1957 | 20 August 1959 |
| Minister of Public Works | David James Walker | 20 August 1959 | 18 July 1962 |
| Minister of Public Works | Howard Charles Green (acting) | 18 July 1962 | 9 August 1962 |
| Minister of Public Works | Davie Fulton | 9 August 1962 | 22 April 1963 |
| Secretary of State for Canada and Registrar General | Ellen Fairclough | 21 June 1957 | 12 May 1958 |
| Secretary of State for Canada and Registrar General | Henri Courtemanche | 12 May 1958 | 19 January 1960 |
| Secretary of State for Canada and Registrar General | Léon Balcer (acting) | 19 January 1960 | 11 October 1960 |
| Secretary of State for Canada and Registrar General | Noël Dorion | 11 October 1960 | 5 July 1962 |
| Secretary of State for Canada and Registrar General | Léon Balcer (acting) | 5 July 1962 | 9 August 1962 |
| Secretary of State for Canada and Registrar General | Ernest Halpenny | 9 August 1962 | 22 April 1963 |
| Solicitor General | Léon Balcer | 21 June 1957 | 11 October 1960 |
| Solicitor General | William Joseph Browne | 11 October 1960 | 9 August 1962 |
| Solicitor General | Vacant | 9 August 1962 | 22 April 1963 |
| Minister of Trade and Commerce | Gordon Churchill | 21 June 1957 | 11 October 1960 |
| Minister of Trade and Commerce | George Hees | 11 October 1960 | 8 February 1963 |
| Minister of Trade and Commerce | Vacant (James Alan Roberts was acting) | 8 February 1963 | 12 February 1963 |
| Minister of Trade and Commerce | Malcolm Wallace McCutcheon | 12 February 1963 | 22 April 1963 |
| Minister of Transport | George Hees | 21 June 1957 | 11 October 1960 |
| Minister of Transport | Léon Balcer | 11 October 1960 | 22 April 1963 |
| Minister of Veterans Affairs | Alfred Johnson Brooks | 21 June 1957 | 11 October 1960 |
| Minister of Veterans Affairs | Gordon Churchill | 11 October 1960 | 12 February 1963 |
| Minister of Veterans Affairs | Marcel Lambert | 12 February 1963 | 22 April 1963 |
| Minister without Portfolio | William Joseph Browne | 21 June 1957 | 11 October 1960 |
| Minister without Portfolio | James Macdonnell | 21 June 1957 | 20 August 1959 |
| Minister without Portfolio | John Thomas Haig | 9 October 1957 | 11 May 1958 |
| Minister without Portfolio | Ernest Halpenny | 11 October 1960 | 9 August 1962 |
| Minister without Portfolio | Malcolm Wallace McCutcheon | 9 August 1962 | 12 February 1963 |
| Minister without Portfolio | Frank Charles McGee | 18 March 1963 | 22 April 1963 |
| Minister without Portfolio | Théogène Ricard | 18 March 1963 | 22 April 1963 |
| Offices not of the Cabinet ||||
| Leader of the Government in the Senate | Walter Aseltine | 12 May 1958 | 31 August 1962 |
| Leader of the Government in the Senate | Alfred Johnson Brooks | 31 August 1962 | 22 April 1963 |