| | # | Secretary of State | Prime Minister | Tenure | |
| | 1. | Hector Louis Langevin | Macdonald | July 1, 1867 – December 7, 1869 | |
| | 2. | James Cox Aikins | Macdonald | December 8, 1867 – November 5, 1873 | |
| | 3. | David Christie | Mackenzie | November 7, 1873 – January 8, 1874 | |
| | 4. | Richard William Scott | Mackenzie | January 9, 1874 – October 8, 1878 | |
| | 5. | James Cox Aikins | Macdonald | October 19, 1878 – November 7, 1880 | |
| | 6. | John O'Connor | Macdonald | November 8, 1880 – May 19, 1881 | |
| | 7. | Joseph-Alfred Mousseau | Macdonald | May 20, 1881 – July 28, 1882 | |
| | 8. | Joseph Adolphe Chapleau | Macdonald | July 29, 1882 – June 6, 1891 | |
| | 8. | Joseph Adolphe Chapleau | Abbott | June 16, 1891 – January 24, 1892 | |
| | 9. | James Colebrooke Patterson | Abbott | January 25, 1892 – November 24, 1892 | |
| | 10. | John Costigan | Thompson | December 5, 1892 – December 12, 1894 | |
| | 11. | Arthur Rupert Dickey | Bowell | December 21, 1894 – March 25, 1895 | |
| | 12. | Walter Humphries Montague | Bowell | March 26, 1895 – December 20, 1895 | |
| | * | Joseph Aldéric Ouimet (acting) | Bowell | December 21, 1895 – January 5, 1896 | |
| | * | Thomas Mayne Daly (acting) | Bowell | January 6, 1896 – January 14, 1896 | |
| | 13. | Sir Charles Tupper | Bowell | January 15, 1896 – April 27, 1896 | |
| | 13. | Sir Charles Tupper | as PM | May 1, 1896 – July 8, 1896 | |
| | 14. | Richard William Scott | Laurier | July 13, 1896 – October 8, 1908 | |
| | 15. | Charles Murphy | Laurier | October 9, 1908 – October 6, 1911 | |
| | 16. | William James Roche | Borden | October 10, 1911 – October 28, 1912 | |
| | 17. | Louis Coderre | Borden | October 29, 1912 – October 5, 1915 | |
| | 18. | Pierre Édouard Blondin | Borden | October 6, 1915 – January 7, 1917 | |
| | 19. | Esioff Léon Patenaude | Borden | January 8, 1917 – June 12, 1917 | |
| | * | Albert Sévigny (acting) | Borden | June 13, 1917 – August 24, 1917 | |
| | 20. | Arthur Meighen | Borden | August 25, 1917 – October 12, 1917 | |
| | 21. | Martin Burrell | Borden | October 12, 1917 – December 30, 1919 | |
| | 22. | Arthur Lewis Sifton | Borden | December 31, 1919 – July 10, 1920 | |
| | 22. | Arthur Lewis Sifton | Meighen | July 10, 1920 – January 21, 1921 | |
| | 23. | Sir Henry Lumley Drayton | Meighen | January 24, 1921 – September 20, 1921 | |
| | 24. | Rodolphe Monty | Meighen | September 21, 1921 – December 29, 1921 | |
| | 25. | Arthur Bliss Copp | King | December 29, 1921 – September 24, 1921 | |
| | 26. | Walter Edward Foster | King | September 26, 1925 – November 12, 1925 | |
| | * | Charles Murphy (acting) | King | November 13, 1925 – March 23, 1926 | |
| | * | Ernest Lapointe (acting) | King | March 24, 1926 – June 28, 1926 | |
| | 27. | Guillaume André Fauteux | Meighen | August 23, 1926 – September 25, 1926 | |
| | 28. | Fernand Rinfret | King | September 25, 1926 – August 7, 1930 | |
| | 29. | Charles Hazlitt Cahan | Bennett | August 7, 1930 – October 23, 1935 | |
| | | Fernand Rinfret (second time) | King | October 23, 1935 – July 12, 1939 | |
| | * | Ernest Lapointe (acting – 2nd time) | King | July 26, 1939 – May 8, 1940 | |
| | 30. | Pierre-François Casgrain | King | May 9, 1940 – December 14, 1941 | |
| | 31. | Norman Alexander McLarty | King | December 15, 1941 – April 17, 1945 | |
| | 32. | Paul Joseph James Martin | King | April 18, 1945 – December 11, 1946 | |
| | 33. | Colin William George Gibson | King | December 12, 1946 – November 15, 1948 | |
| | 33. | Colin William George Gibson | St. Laurent | November 15, 1948 – March 31, 1949 | |
| | 34. | Frederick Gordon Bradley | St. Laurent | March 31, 1949 – June 11, 1953 | |
| | 35. | Jack Pickersgill | St. Laurent | June 11, 1953 – June 30, 1954 | |
| | 36. | Roch Pinard | St. Laurent | July 1, 1954 – June 21, 1957 | |
| | 37. | Ellen Louks Fairclough | Diefenbaker | June 21, 1957 – May 11, 1958 | |
| | 38. | Henri Courtemanche | Diefenbaker | May 12, 1958 – June 19, 1960 | |
| | * | Léon Balcer (acting minister) | Diefenbaker | June 21, 1960 – October 10, 1960 | |
| | 39. | Noël Dorion | Diefenbaker | October 11, 1960 – July 5, 1962 | |
| | * | Léon Balcer (acting minister – 2nd time) | Diefenbaker | July 11, 1962 – August 8, 1962 | |
| | 40. | George Ernest Halpenny | Diefenbaker | August 9, 1962 – April 22, 1963 | |
| | | Jack Pickersgill (second time) | Pearson | April 22, 1963 – February 2, 1964 | |
| | 41. | Maurice Lamontagne | Pearson | February 2, 1964 – December 17, 1965 | |
| | 42. | Judy LaMarsh | Pearson | December 17, 1965 – April 9, 1968 | |
| | * | John Joseph Connolly (acting minister) | Pearson | April 10, 1968 – April 20, 1968 | |
| | 43. | Jean Marchand | Trudeau | April 20, 1968 – July 5, 1968 | |
| | 44. | Gérard Pelletier | Trudeau | July 5, 1968 – November 26, 1972 | |
| | 45. | James Hugh Faulkner | Trudeau | November 27, 1972 – September 13, 1976 | |
| | 46. | John Roberts | Trudeau | September 14, 1976 – June 3, 1979 | |
| | 47. | David MacDonald | Clark | June 4, 1979 – March 2, 1980 | |
| | 48. | Francis Fox | Trudeau | March 3, 1980 – September 21, 1981 | |
| | 49. | Gerald Regan | Trudeau | September 22, 1981 – October 5, 1982 | |
| | 50. | Serge Joyal | Trudeau | October 6, 1982 – June 29, 1984 | |
| | 50. | Serge Joyal | Turner | June 30, 1984 – September 16, 1984 | |
| | 51. | Walter McLean | Mulroney | September 17, 1984 – April 19, 1985 | |
| | 52. | Benoit Bouchard | Mulroney | April 20, 1985 – June 29, 1986 | |
| | 53. | David Crombie | Mulroney | June 30, 1986 – March 30, 1988 | |
| | 54. | Lucien Bouchard | Mulroney | March 31, 1988 – January 29, 1989 | |
| | 55. | Gerry Weiner | Mulroney | January 30, 1989 – April 20, 1991 | |
| | 56. | Robert de Cotret | Mulroney | April 21, 1991 – January 3, 1993 | |
| | 57. | Monique Landry | Mulroney | January 4, 1993 – June 24, 1993 | |
| | 57. | Monique Landry | Campbell | June 24, 1993 – November 3, 1993 | |
| | 58. | Sergio Marchi | Chrétien | November 4, 1993 – January 24, 1996 | |
| | 59. | Lucienne Robillard | Chrétien | January 25, 1996 – July 12, 1996 | |
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