| Senator | Lifespan | Party [1] | Prov. | Entered | Left | Appointed by | Left due to | For life? |
|---|---|---|---|---|---|---|---|---|
| Raymonde Gagné | 1956–present | NA | MB | 1 April 2016 | — | Trudeau, J. | — | |
| Rosa Galvez | 1961–present | NA | QC | 6 December 2016 | — | Trudeau, J. | — | |
| Jean-Robert Gauthier | 1929–2009 | L | ON | 23 November 1994 | 22 October 2004 | Chrétien | Retirement | |
| Louis-Philippe Gélinas | 1902–1976 | L | QC | 11 June 1963 | 10 December 1975 | Pearson | Resignation | Y |
| Amina Gerba | 1961–present | QC | 29 July 2021 | — | Trudeau, J. | — | ||
| Frederick William Gershaw | 1883–1968 | L | AB | 18 April 1945 | 26 March 1968 | King | Resignation | Y |
| Irving Gerstein | 1941–present | C | ON | 22 December 2008 | 20 February 2016 | Harper | Retirement | |
| Ron Ghitter | 1935–present | PC | AB | 25 March 1993 | 31 March 2000 | Mulroney | Resignation | |
| Thomas Nicholson Gibbs | 1821–1883 | LC | ON | 3 April 1880 | 7 April 1883 | Macdonald | Death | Y |
| William Gibson | 1849–1914 | L | ON | 11 February 1902 | 4 May 1914 | Laurier | Death | Y |
| Philippe Gigantès | 1923–2004 | L | QC | 13 January 1984 | 16 August 1998 | Trudeau, P. | Retirement | |
| Clément Gignac | 1955–present | QC | 29 July 2021 | — | Trudeau, J. | — | ||
| Louis Giguère | 1911–2002 | L | QC | 10 September 1968 | 18 December 1986 | Trudeau, P. | Retirement | |
| Aurélien Gill | 1933–2015 | L | QC | 17 September 1998 | 26 August 2008 | Chrétien | Retirement | |
| Archibald Beaton Gillis | 1864–1940 | C | SK | 17 October 1921 | 18 January 1940 | Meighen | Death | Y |
| Arthur Hill Gillmor | 1824–1903 | L | NB | 2 April 1900 | 13 April 1903 | Laurier | Death | Y |
| Daniel Gillmor | 1849–1918 | L | NB | 15 January 1907 | 22 February 1918 | Laurier | Death | Y |
| Marc-Amable Girard | 1822–1892 | C | MB | 13 December 1871 | 12 September 1892 | Macdonald | Death | Y |
| Edward Lavin Girroir | 1871–1932 | C | NS | 20 November 1912 | 8 May 1932 | Borden | Death | Y |
| James Gladstone | 1887–1971 | IC | AB | 31 January 1958 | 31 March 1971 | Diefenbaker | Resignation | Y |
| Robert Gladstone | 1879–1951 | L | ON | 7 September 1949 | 1 June 1951 | St. Laurent | Death | Y |
| John Glasier | 1809–1894 | L | NB | 14 March 1868 | 7 July 1894 | Macdonald | Death | Y |
| Joseph Godbout | 1850–1923 | L | QC | 4 April 1901 | 1 April 1923 | Laurier | Death | Y |
| Adélard Godbout | 1892–1956 | L | QC | 25 June 1949 | 18 September 1956 | St. Laurent | Death | Y |
| John Morrow Godfrey | 1912–2001 | L | ON | 5 October 1973 | 28 June 1987 | Trudeau, P. | Retirement | |
| Marc Gold | 1950–present | NA | QC | 25 November 2016 | — | Trudeau, J. | — | |
| Carl Goldenberg | 1907–1996 | L | QC | 4 November 1971 | 20 October 1982 | Trudeau, P. | Retirement | |
| William Henry Golding | 1878–1961 | L | ON | 25 June 1949 | 31 December 1961 | St. Laurent | Death | Y |
| Yoine Goldstein | 1934–2020 | L | QC | 29 August 2005 | 11 May 2009 | Martin | Retirement | |
| George Gordon | 1865–1942 | C | ON | 17 October 1912 | 3 February 1942 | Borden | Death | Y |
| Léon Mercier Gouin | 1891–1983 | L | QC | 7 November 1940 | 18 March 1976 | King | Resignation | Y |
| James Robert Gowan | 1815–1909 | LC | ON | 29 January 1885 | 1 February 1907 | Macdonald | Resignation | Y |
| Jerry Grafstein | 1935–present | L | ON | 13 January 1984 | 2 January 2010 | Trudeau, P. | Retirement | |
| Alasdair Graham | 1929–2015 | L | NS | 27 April 1972 | 21 May 2004 | Trudeau, P. | Retirement | |
| George Perry Graham | 1859–1943 | L | ON | 20 December 1926 | 1 January 1943 | King | Death | Y |
| Robert Patterson Grant | 1814–1892 | L | NS | 2 February 1877 | 13 November 1892 | Mackenzie | Death | Y |
| Thomas Vincent Grant | 1876–1966 | L | PE | 25 June 1949 | 19 August 1965 | St. Laurent | Voluntary retirement | Y |
| Robert Francis Green | 1861–1946 | C | BC | 3 October 1921 | 5 October 1946 | Meighen | Death | Y |
| Joe Greene | 1920–1978 | L | ON | 1 September 1972 | 23 October 1978 | Trudeau, P. | Death | |
| Nancy Greene Raine | 1943–present | C | BC | 2 January 2009 | 11 May 2018 | Harper | Retirement | |
| Stephen Greene | 1949–present | C→IR | NS | 2 January 2009 | — | Harper | — | |
| Margo Lainne Greenwood | 1953–present | BC | 10 November 2022 | — | Trudeau, J. | — | ||
| William Antrobus Griesbach | 1878–1945 | C | AB | 15 September 1921 | 21 January 1945 | Meighen | Death | Y |
| Diane Griffin | 1947–present | NA | PE | 10 November 2016 | 18 March 2022 | Trudeau, J. | Retirement | |
| Normand Grimard | 1925–2017 | PC | QC | 27 September 1990 | 16 June 2000 | Mulroney | Retirement | |
| Allister Grosart | 1906–1984 | PC | ON | 24 September 1962 | 13 December 1981 | Diefenbaker | Voluntary retirement | Y |
| Joseph-Philippe Guay | 1915–2001 | L | MB | 23 March 1978 | 4 October 1990 | Trudeau, P. | Retirement | |
| Jean-Baptiste Guevremont | 1826–1896 | C | QC | 23 October 1867 | 14 June 1896 | Royal proclamation | Resignation | Y |
| Lenard Gustafson | 1933–2022 | C | SK | 26 May 1993 | 10 November 2008 | Mulroney | Retirement |