{|class="wikitable sortable"
|-
! Senator !! Lifespan !! Party !! Prov. !! Entered !! Left !! Appointed by !! Left due to !! For life?
|-
| Mobina Jaffer || 1949–present || L || BC || 13 June 2001 || 19 August 2024 || Chrétien || Retirement ||
|-
| Robert Jaffray || 1832–1914 || L || ON || 8 March 1906 || 16 December 1914 || Laurier || Death || Y
|-
| Duncan Jessiman || 1923–2006 || PC || MB || 26 May 1993 || 5 June 1998 || Mulroney || Retirement ||
|-
| Mariana Beauchamp Jodoin || 1881–1980 || L || QC || 19 May 1953 || 1 June 1966 || St. Laurent || Voluntary retirement || Y
|-
| Janis Johnson || 1946–present || C || MB || 27 September 1990 || 27 September 2016 || Mulroney || Resignation ||
|-
| John Frederick Johnston || 1876–1948 || L || SK || 5 October 1943 || 9 May 1948 || King || Death || Y
|-
| Archibald Johnstone || 1924–2014 || L || PE || 6 March 1998 || 12 June 1999 || Chrétien || Retirement ||
|-
| George Burpee Jones || 1866–1950 || C || NB || 20 July 1935 || 27 April 1950 || Bennett || Death || Y
|-
| John Walter Jones || 1878–1954 || L || PE || 19 May 1953 || 31 March 1954 || St. Laurent || Death || Y
|-
| Lyman Melvin Jones || 1843–1917 || L || ON || 21 January 1901 || 15 April 1917 || Laurier || Death || Y
|-
| Serge Joyal || 1945–present || L || QC || 26 November 1997 || 31 January 2020 || Chrétien || Retirement ||
|}