-
[Senator]: Creelman MacArthur
[Lifespan]: 1874–1943
[Party]: L
[Prov.]: PE
[Entered]: 5 September 1925
[Left]: 27 December 1943
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Andrew Archibald Macdonald
[Lifespan]: 1829–1912
[Party]: LC
[Prov.]: PE
[Entered]: 11 May 1891
[Left]: 21 March 1912
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Finlay Macdonald
[Lifespan]: 1923–2002
[Party]: PC
[Prov.]: NS
[Entered]: 21 December 1984
[Left]: 4 January 1998
[Appointed by]: Mulroney
[Left due to]: retirement
[For life?]: -
[Senator]: John Macdonald
[Lifespan]: 1824–1890
[Party]: IL
[Prov.]: ON
[Entered]: 9 November 1887
[Left]: 4 February 1890
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: John Alexander Macdonald
[Lifespan]: 1883–1945
[Party]: C
[Prov.]: NS
[Entered]: 2 March 1932
[Left]: 11 June 1945
[Appointed by]: Bennett
[Left due to]: death
[For life?]: Y -
[Senator]: John Alexander Macdonald
[Lifespan]: 1874–1948
[Party]: C
[Prov.]: PE
[Entered]: 20 July 1935
[Left]: 15 November 1948
[Appointed by]: Bennett
[Left due to]: death
[For life?]: Y -
[Senator]: John Joseph MacDonald
[Lifespan]: 1891–1986
[Party]: PC
[Prov.]: PE
[Entered]: 27 January 1958
[Left]: 20 April 1971
[Appointed by]: Diefenbaker
[Left due to]: resignation
[For life?]: Y -
[Senator]: John Michael Macdonald
[Lifespan]: 1906–1997
[Party]: PC
[Prov.]: NS
[Entered]: 24 June 1960
[Left]: 20 June 1997
[Appointed by]: Diefenbaker
[Left due to]: death
[For life?]: Y -
[Senator]: Michael L. MacDonald
[Lifespan]: 1955–
[Party]: C
[Prov.]: NS
[Entered]: 2 January 2009
[Left]: present
[Appointed by]: Harper
[Left due to]: —
[For life?]: -
[Senator]: William John Macdonald
[Lifespan]: 1832–1916
[Party]: C
[Prov.]: BC
[Entered]: 13 December 1871
[Left]: 13 April 1915
[Appointed by]: Macdonald
[Left due to]: resignation
[For life?]: Y -
[Senator]: William Ross Macdonald
[Lifespan]: 1891–1976
[Party]: L
[Prov.]: ON
[Entered]: 12 June 1953
[Left]: 22 December 1967
[Appointed by]: St-Laurent
[Left due to]: voluntary retirement
[For life?]: Y -
[Senator]: Angus Claude Macdonell
[Lifespan]: 1861–1924
[Party]: C
[Prov.]: ON
[Entered]: 1 August 1917
[Left]: 1 January 1921
[Appointed by]: Borden
[Left due to]: resignation
[For life?]: Y -
[Senator]: Archibald Hayes Macdonell
[Lifespan]: 1868–1939
[Party]: C
[Prov.]: ON
[Entered]: 7 November 1921
[Left]: 12 November 1939
[Appointed by]: Meighen
[Left due to]: death
[For life?]: Y -
[Senator]: Allan MacEachen
[Lifespan]: 1921–
[Party]: L
[Prov.]: NS
[Entered]: 29 June 1984
[Left]: 6 July 1996
[Appointed by]: Trudeau, P.
[Left due to]: retirement
[For life?]: -
[Senator]: Alexander Macfarlane
[Lifespan]: 1818–1898
[Party]: C
[Prov.]: NS
[Entered]: 10 October 1870
[Left]: 14 December 1898
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Donald MacInnes
[Lifespan]: 1824–1900
[Party]: L
[Prov.]: ON
[Entered]: 24 December 1881
[Left]: 2 December 1900
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Robert Mackay
[Lifespan]: 1840–1916
[Party]: L
[Prov.]: QC
[Entered]: 21 January 1901
[Left]: 25 December 1916
[Appointed by]: Laurier
[Left due to]: death
[For life?]: Y -
[Senator]: David MacKeen
[Lifespan]: 1839–1916
[Party]: C
[Prov.]: NS
[Entered]: 21 February 1896
[Left]: 15 October 1915
[Appointed by]: Bowell
[Left due to]: resignation
[For life?]: Y -
[Senator]: Ian Alistair Mackenzie
[Lifespan]: 1890–1949
[Party]: L
[Prov.]: BC
[Entered]: 19 January 1948
[Left]: 2 September 1949
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Norman MacKenzie
[Lifespan]: 1894–1986
[Party]: IL
[Prov.]: BC
[Entered]: 24 February 1966
[Left]: 5 January 1969
[Appointed by]: Pearson
[Left due to]: retirement
[For life?]: -
[Senator]: James Angus MacKinnon
[Lifespan]: 1881–1958
[Party]: L
[Prov.]: AB
[Entered]: 9 May 1949
[Left]: 18 April 1958
[Appointed by]: St-Laurent
[Left due to]: death
[For life?]: Y -
[Senator]: Donald MacLennan
[Lifespan]: 1877–1953
[Party]: L
[Prov.]: NS
[Entered]: 29 January 1940
[Left]: 19 October 1953
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Alan Macnaughton
[Lifespan]: 1903–1999
[Party]: L
[Prov.]: QC
[Entered]: 8 July 1966
[Left]: 30 July 1978
[Appointed by]: Pearson
[Left due to]: retirement
[For life?]: -
[Senator]: David Lewis Macpherson
[Lifespan]: 1818–1896
[Party]: C
[Prov.]: ON
[Entered]: 23 October 1867
[Left]: 16 August 1896
[Appointed by]: Royal Proclamation
[Left due to]: death
[For life?]: Y -
[Senator]: Heath MacQuarrie
[Lifespan]: 1919–2002
[Party]: PC
[Prov.]: PE
[Entered]: 3 October 1979
[Left]: 18 September 1994
[Appointed by]: Clark
[Left due to]: retirement
[For life?]: -
[Senator]: Duncan Kenneth MacTavish
[Lifespan]: 1899–1963
[Party]: L
[Prov.]: ON
[Entered]: 11 June 1963
[Left]: 15 November 1963
[Appointed by]: Pearson
[Left due to]: death
[For life?]: Y -
[Senator]: Shirley Maheu
[Lifespan]: 1931–2006
[Party]: L
[Prov.]: QC
[Entered]: 1 February 1996
[Left]: 1 February 2006
[Appointed by]: Chrétien
[Left due to]: death
[For life?]: -
[Senator]: Frank Mahovlich
[Lifespan]: 1938–
[Party]: L
[Prov.]: ON
[Entered]: 11 June 1998
[Left]: 10 January 2013
[Appointed by]: Chrétien
[Left due to]: retirement
[For life?]: -
[Senator]: Charles-Christophe Malhiot
[Lifespan]: 1808–1874
[Party]: L
[Prov.]: QC
[Entered]: 23 October 1867
[Left]: 9 November 1874
[Appointed by]: Royal Proclamation
[Left due to]: death
[For life?]: Y -
[Senator]: Marian Maloney
[Lifespan]: 1924–2010
[Party]: L
[Prov.]: ON
[Entered]: 11 June 1998
[Left]: 16 August 1999
[Appointed by]: Chrétien
[Left due to]: retirement
[For life?]: -
[Senator]: Ghislain Maltais
[Lifespan]: 1944–
[Party]: C
[Prov.]: QC
[Entered]: 6 January 2012
[Left]: present
[Appointed by]: Harper
[Left due to]: —
[For life?]: -
[Senator]: Ernest Manning
[Lifespan]: 1908–1996
[Party]: SC
[Prov.]: AB
[Entered]: 7 October 1970
[Left]: 20 September 1983
[Appointed by]: Trudeau, P.
[Left due to]: retirement
[For life?]: -
[Senator]: Fabian Manning
[Lifespan]: 1964–
[Party]: C
[Prov.]: NL
[Entered]: 22 December 200825 May 2011
[Left]: 28 March 2011present
[Appointed by]: Harper
[Left due to]: —
[For life?]: -
[Senator]: Jean Marchand
[Lifespan]: 1918–1988
[Party]: L
[Prov.]: QC
[Entered]: 9 December 1976
[Left]: 15 December 1983
[Appointed by]: Trudeau, P.
[Left due to]: resignation
[For life?]: -
[Senator]: Leonard Marchand
[Lifespan]: 1933–2016
[Party]: L
[Prov.]: BC
[Entered]: 29 June 1984
[Left]: 1 March 1998
[Appointed by]: Trudeau, P.
[Left due to]: resignation
[For life?]: -
[Senator]: Arthur Marcotte
[Lifespan]: 1873–1958
[Party]: C
[Prov.]: SK
[Entered]: 6 July 1931
[Left]: 18 August 1958
[Appointed by]: Bennett
[Left due to]: death
[For life?]: Y -
[Senator]: Lorna Marsden
[Lifespan]: 1942–
[Party]: L
[Prov.]: ON
[Entered]: 24 January 1984
[Left]: 31 August 1992
[Appointed by]: Trudeau, P.
[Left due to]: resignation
[For life?]: -
[Senator]: Duncan Marshall
[Lifespan]: 1872–1946
[Party]: L
[Prov.]: ON
[Entered]: 20 January 1938
[Left]: 16 January 1946
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Elizabeth Marshall
[Lifespan]: 1951–
[Party]: C
[Prov.]: NL
[Entered]: 29 January 2010
[Left]: present
[Appointed by]: Harper
[Left due to]: —
[For life?]: -
[Senator]: Jack Marshall
[Lifespan]: 1919–2004
[Party]: PC
[Prov.]: NL
[Entered]: 23 March 1978
[Left]: 26 November 1994
[Appointed by]: Trudeau, P.
[Left due to]: retirement
[For life?]: -
[Senator]: Paul Martin Sr.
[Lifespan]: 1903–1992
[Party]: L
[Prov.]: ON
[Entered]: 20 April 1968
[Left]: 30 October 1974
[Appointed by]: Trudeau, P.
[Left due to]: resignation
[For life?]: -
[Senator]: Peter Francis Martin
[Lifespan]: 1856–1935
[Party]: C
[Prov.]: NS
[Entered]: 5 December 1921
[Left]: 2 May 1935
[Appointed by]: Meighen
[Left due to]: death
[For life?]: Y -
[Senator]: Yonah Martin
[Lifespan]: 1965–
[Party]: C
[Prov.]: BC
[Entered]: 2 January 2009
[Left]: present
[Appointed by]: Harper
[Left due to]: —
[For life?]: -
[Senator]: Sabi Marwah
[Lifespan]: 1951–
[Party]: NA
[Prov.]: ON
[Entered]: 10 November 2016
[Left]: present
[Appointed by]: Trudeau, J.
[Left due to]: —
[For life?]: -
[Senator]: James Mason
[Lifespan]: 1843–1918
[Party]: C
[Prov.]: ON
[Entered]: 26 May 1913
[Left]: 16 July 1918
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: Paul Massicotte
[Lifespan]: 1951–
[Party]: L
[Prov.]: QC
[Entered]: 26 June 2003
[Left]: present
[Appointed by]: Chrétien
[Left due to]: —
[For life?]: -
[Senator]: Louis-Rodrigue Masson
[Lifespan]: 1833–1903
[Party]: C
[Prov.]: QC
[Entered]: 29 September 18823 February 1890
[Left]: 6 November 188411 June 1903
[Appointed by]: Macdonald
[Left due to]: resignation
[For life?]: Y -
[Senator]: Roderick Matheson
[Lifespan]: 1793–1873
[Party]: C
[Prov.]: ON
[Entered]: 23 October 1867
[Left]: 13 January 1873
[Appointed by]: Royal Proclamation
[Left due to]: death
[For life?]: Y -
[Senator]: Alexander McCall
[Lifespan]: 1844–1925
[Party]: C
[Prov.]: ON
[Entered]: 26 May 1913
[Left]: 10 June 1925
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: Lachlin McCallum
[Lifespan]: 1823–1903
[Party]: LC
[Prov.]: ON
[Entered]: 4 February 1887
[Left]: 13 January 1903
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Abner Reid McClelan
[Lifespan]: 1831–1917
[Party]: L
[Prov.]: NB
[Entered]: 23 October 1867
[Left]: 9 December 1896
[Appointed by]: Royal Proclamation
[Left due to]: resignation
[For life?]: Y -
[Senator]: Archibald McCoig
[Lifespan]: 1873–1927
[Party]: L
[Prov.]: ON
[Entered]: 4 January 1922
[Left]: 21 November 1927
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: John Mccormick
[Lifespan]: 1858–1936
[Party]: C
[Prov.]: NS
[Entered]: 21 September 1921
[Left]: 21 February 1936
[Appointed by]: Meighen
[Left due to]: death
[For life?]: Y -
[Senator]: Elaine McCoy
[Lifespan]: 1946–
[Party]: PC→IPC→NA
[Prov.]: AB
[Entered]: 24 March 2005
[Left]: present
[Appointed by]: Martin
[Left due to]: —
[For life?]: -
[Senator]: Walter McCrea
[Lifespan]: 1810–1892
[Party]: L
[Prov.]: ON
[Entered]: 23 October 1867
[Left]: 5 January 1871
[Appointed by]: Royal Proclamation
[Left due to]: resignation
[For life?]: Y -
[Senator]: Jonathan McCully
[Lifespan]: 1809–1877
[Party]: L
[Prov.]: NS
[Entered]: 23 October 1867
[Left]: 28 September 1870
[Appointed by]: Royal Proclamation
[Left due to]: resignation
[For life?]: Y -
[Senator]: Malcolm Wallace McCutcheon
[Lifespan]: 1906–1969
[Party]: PC
[Prov.]: ON
[Entered]: 9 August 1962
[Left]: 13 May 1968
[Appointed by]: Diefenbaker
[Left due to]: resignation
[For life?]: Y -
[Senator]: Alexander Hamilton McDonald
[Lifespan]: 1919–1980
[Party]: L
[Prov.]: SK
[Entered]: 13 August 1965
[Left]: 31 March 1980
[Appointed by]: Pearson
[Left due to]: death
[For life?]: -
[Senator]: Charles McDonald
[Lifespan]: 1867–1936
[Party]: L
[Prov.]: BC
[Entered]: 30 December 1935
[Left]: 6 October 1936
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Donald McDonald
[Lifespan]: 1816–1879
[Party]: L
[Prov.]: ON
[Entered]: 23 October 1867
[Left]: 20 January 1879
[Appointed by]: Royal Proclamation
[Left due to]: death
[For life?]: Y -
[Senator]: John Alexander McDonald
[Lifespan]: 1889–1962
[Party]: L
[Prov.]: NS
[Entered]: 18 April 1945
[Left]: 16 April 1962
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: John Anthony McDonald
[Lifespan]: 1875–1948
[Party]: I
[Prov.]: NB
[Entered]: 17 February 1921
[Left]: 12 December 1948
[Appointed by]: Meighen
[Left due to]: death
[For life?]: Y -
[Senator]: William McDonald
[Lifespan]: 1837–1916
[Party]: C
[Prov.]: NS
[Entered]: 12 May 1884
[Left]: 4 July 1916
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Wilfrid Laurier McDougald
[Lifespan]: 1881–1942
[Party]: L
[Prov.]: QC
[Entered]: 25 June 1926
[Left]: 3 May 1932
[Appointed by]: King
[Left due to]: resignation
[For life?]: Y -
[Senator]: Charles McElman
[Lifespan]: 1920–2000
[Party]: L
[Prov.]: NB
[Entered]: 24 February 1966
[Left]: 1 April 1990
[Appointed by]: Pearson
[Left due to]: resignation
[For life?]: -
[Senator]: Gerry McGeer
[Lifespan]: 1888–1947
[Party]: L
[Prov.]: BC
[Entered]: 9 June 1945
[Left]: 11 August 1947
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Frederic McGrand
[Lifespan]: 1895–1988
[Party]: L
[Prov.]: NB
[Entered]: 28 July 1955
[Left]: 22 January 1988
[Appointed by]: St-Laurent
[Left due to]: resignation
[For life?]: Y -
[Senator]: James Drummond McGregor
[Lifespan]: 1838–1918
[Party]: L
[Prov.]: NS
[Entered]: 24 April 1903
[Left]: 1 October 1910
[Appointed by]: Laurier
[Left due to]: resignation
[For life?]: Y -
[Senator]: William Henry McGuire
[Lifespan]: 1875–1957
[Party]: L
[Prov.]: ON
[Entered]: 20 December 1926
[Left]: 31 October 1957
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: George McHugh
[Lifespan]: 1845–1926
[Party]: L
[Prov.]: ON
[Entered]: 21 January 1901
[Left]: 28 November 1926
[Appointed by]: Laurier
[Left due to]: death
[For life?]: Y -
[Senator]: George McIlraith
[Lifespan]: 1908–1992
[Party]: L
[Prov.]: ON
[Entered]: 27 April 1972
[Left]: 29 July 1983
[Appointed by]: Trudeau, P.
[Left due to]: retirement
[For life?]: -
[Senator]: Thomas Robert McInnes
[Lifespan]: 1840–1904
[Party]: I
[Prov.]: BC
[Entered]: 24 December 1881
[Left]: 18 November 1897
[Appointed by]: Macdonald
[Left due to]: resignation
[For life?]: Y -
[Senator]: Tom McInnis
[Lifespan]: 1945–
[Party]: C
[Prov.]: NS
[Entered]: 6 September 2012
[Left]: present
[Appointed by]: Harper
[Left due to]: —
[For life?]: -
[Senator]: James P. McIntyre
[Lifespan]: 1883–1957
[Party]: L
[Prov.]: PE
[Entered]: 19 February 1943
[Left]: 8 April 1957
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Paul McIntyre
[Lifespan]: 1944–
[Party]: C
[Prov.]: NB
[Entered]: 6 September 2012
[Left]: present
[Appointed by]: Harper
[Left due to]: —
[For life?]: -
[Senator]: Thomas McKay
[Lifespan]: 1839–1912
[Party]: LC
[Prov.]: NS
[Entered]: 24 December 1881
[Left]: 13 January 1912
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: William McKay
[Lifespan]: 1847–1915
[Party]: C
[Prov.]: NS
[Entered]: 20 November 1912
[Left]: 8 November 1915
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: Stanley Stewart McKeen
[Lifespan]: 1897–1966
[Party]: L
[Prov.]: BC
[Entered]: 27 January 1947
[Left]: 1 December 1966
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: George Crawford McKindsey
[Lifespan]: 1829–1901
[Party]: C
[Prov.]: ON
[Entered]: 11 January 1884
[Left]: 12 February 1901
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Peter McLaren
[Lifespan]: 1833–1919
[Party]: C
[Prov.]: ON
[Entered]: 21 February 1890
[Left]: 23 May 1919
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Alexander Neil McLean
[Lifespan]: 1885–1967
[Party]: L
[Prov.]: NB
[Entered]: 18 April 1945
[Left]: 12 March 1967
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Donald A. McLean
[Lifespan]: 1907–1973
[Party]: L
[Prov.]: NB
[Entered]: 15 March 1968
[Left]: 5 November 1973
[Appointed by]: Pearson
[Left due to]: death
[For life?]: -
[Senator]: John McLean
[Lifespan]: 1846–1936
[Party]: C
[Prov.]: PE
[Entered]: 3 December 1915
[Left]: 20 February 1936
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: Archibald McLelan
[Lifespan]: 1824–1890
[Party]: LC
[Prov.]: NS
[Entered]: 21 June 1869
[Left]: 20 May 1881
[Appointed by]: Macdonald
[Left due to]: resignation
[For life?]: Y -
[Senator]: John Stewart McLennan
[Lifespan]: 1853–1939
[Party]: C
[Prov.]: NS
[Entered]: 10 February 1916
[Left]: 15 September 1939
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: William McMaster
[Lifespan]: 1811–1887
[Party]: L
[Prov.]: ON
[Entered]: 23 October 1867
[Left]: 22 September 1887
[Appointed by]: Royal Proclamation
[Left due to]: death
[For life?]: Y -
[Senator]: Lendrum McMeans
[Lifespan]: 1859–1941
[Party]: C
[Prov.]: MB
[Entered]: 26 July 1917
[Left]: 13 September 1941
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: Donald McMillan
[Lifespan]: 1835–1914
[Party]: C
[Prov.]: ON
[Entered]: 11 January 1884
[Left]: 26 July 1914
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: James McMullen
[Lifespan]: 1833–1913
[Party]: L
[Prov.]: ON
[Entered]: 11 February 1902
[Left]: 18 March 1913
[Appointed by]: Laurier
[Left due to]: death
[For life?]: Y -
[Senator]: William Craig McNamara
[Lifespan]: 1904–1984
[Party]: L
[Prov.]: MB
[Entered]: 7 October 1970
[Left]: 8 August 1979
[Appointed by]: Trudeau, P.
[Left due to]: retirement
[For life?]: -
[Senator]: Marilou McPhedran
[Lifespan]: 1951–
[Party]: NA
[Prov.]: MB
[Entered]: 10 November 2016
[Left]: present
[Appointed by]: Trudeau, J.
[Left due to]: —
[For life?]: -
[Senator]: Alexander Duncan McRae
[Lifespan]: 1874–1946
[Party]: C
[Prov.]: BC
[Entered]: 4 September 1931
[Left]: 26 June 1946
[Appointed by]: Bennett
[Left due to]: death
[For life?]: Y -
[Senator]: Peter McSweeney
[Lifespan]: 1842–1921
[Party]: L
[Prov.]: NB
[Entered]: 15 March 1899
[Left]: 2 February 1921
[Appointed by]: Laurier
[Left due to]: death
[For life?]: Y -
[Senator]: Marie-Françoise Mégie
[Lifespan]: 1950–
[Party]: NA
[Prov.]: QC
[Entered]: 25 November 2016
[Left]: present
[Appointed by]: Trudeau, J.
[Left due to]: —
[For life?]: -
[Senator]: Arthur Meighen
[Lifespan]: 1874–1960
[Party]: C
[Prov.]: ON
[Entered]: 2 March 1932
[Left]: 16 January 1942
[Appointed by]: Bennett
[Left due to]: resignation
[For life?]: Y -
[Senator]: Michael Meighen
[Lifespan]: 1939–
[Party]: C
[Prov.]: ON
[Entered]: 27 September 1990
[Left]: 6 February 2012
[Appointed by]: Mulroney
[Left due to]: resignation
[For life?]: -
[Senator]: Terry Mercer
[Lifespan]: 1947–
[Party]: L
[Prov.]: NS
[Entered]: 7 November 2003
[Left]: present
[Appointed by]: Chrétien
[Left due to]: —
[For life?]: -
[Senator]: Pana Merchant
[Lifespan]: 1943–
[Party]: L
[Prov.]: SK
[Entered]: 12 December 2002
[Left]: present
[Appointed by]: Chrétien
[Left due to]: —
[For life?]: -
[Senator]: Léonce Mercier
[Lifespan]: 1926–
[Party]: L
[Prov.]: QC
[Entered]: 9 August 1996
[Left]: 11 August 2001
[Appointed by]: Chrétien
[Left due to]: retirement
[For life?]: -
[Senator]: Don Meredith
[Lifespan]: 1964–
[Party]: C→NA
[Prov.]: ON
[Entered]: 18 December 2010
[Left]: 10 May 2017
[Appointed by]: Harper
[Left due to]: resignation
[For life?]: -
[Senator]: Samuel Merner
[Lifespan]: 1823–1908
[Party]: C
[Prov.]: ON
[Entered]: 12 January 1887
[Left]: 11 August 1908
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Léon Méthot
[Lifespan]: 1895–1972
[Party]: PC
[Prov.]: QC
[Entered]: 12 October 1957
[Left]: 6 August 1972
[Appointed by]: Diefenbaker
[Left due to]: death
[For life?]: Y -
[Senator]: Hervé Michaud
[Lifespan]: 1912–1978
[Party]: L
[Prov.]: NB
[Entered]: 15 March 1968
[Left]: 5 June 1978
[Appointed by]: Pearson
[Left due to]: death
[For life?]: -
[Senator]: Edward Michener
[Lifespan]: 1869–1947
[Party]: C
[Prov.]: AB
[Entered]: 5 February 1918
[Left]: 16 June 1947
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: William Miller
[Lifespan]: 1835–1912
[Party]: LC
[Prov.]: NS
[Entered]: 23 October 1867
[Left]: 23 February 1912
[Appointed by]: Royal Proclamation
[Left due to]: death
[For life?]: Y -
[Senator]: David Mills
[Lifespan]: 1831–1903
[Party]: L
[Prov.]: ON
[Entered]: 13 November 1896
[Left]: 7 February 1902
[Appointed by]: Laurier
[Left due to]: resignation
[For life?]: Y -
[Senator]: Samuel Sylvester Mills
[Lifespan]: 1806–1874
[Party]: C
[Prov.]: ON
[Entered]: 23 October 1867
[Left]: 24 January 1874
[Appointed by]: Royal Proclamation
[Left due to]: death
[For life?]: Y -
[Senator]: John Milne
[Lifespan]: 1839–1922
[Party]: C
[Prov.]: ON
[Entered]: 3 December 1915
[Left]: 4 March 1922
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: Lorna Milne
[Lifespan]: 1934–
[Party]: L
[Prov.]: ON
[Entered]: 21 September 1995
[Left]: 13 December 2009
[Appointed by]: Chrétien
[Left due to]: retirement
[For life?]: -
[Senator]: Grant Mitchell
[Lifespan]: 1951–
[Party]: L→IL→NA
[Prov.]: AB
[Entered]: 24 March 2005
[Left]: present
[Appointed by]: Martin
[Left due to]: —
[For life?]: -
[Senator]: Peter Mitchell
[Lifespan]: 1824–1899
[Party]: LC
[Prov.]: NB
[Entered]: 23 October 1867
[Left]: 13 July 1872
[Appointed by]: Royal Proclamation
[Left due to]: resignation
[For life?]: Y -
[Senator]: William Mitchell
[Lifespan]: 1851–1926
[Party]: L
[Prov.]: QC
[Entered]: 5 March 1904
[Left]: 10 May 1926
[Appointed by]: Laurier
[Left due to]: death
[For life?]: Y -
[Senator]: Percy Mockler
[Lifespan]: 1949–
[Party]: C
[Prov.]: NB
[Entered]: 2 January 2009
[Left]: present
[Appointed by]: Harper
[Left due to]: —
[For life?]: -
[Senator]: Gildas Molgat
[Lifespan]: 1927–2001
[Party]: L
[Prov.]: MB
[Entered]: 7 October 1970
[Left]: 28 February 2001
[Appointed by]: Trudeau, P.
[Left due to]: death
[For life?]: -
[Senator]: John Patrick Molloy
[Lifespan]: 1873–1948
[Party]: L
[Prov.]: MB
[Entered]: 6 October 1925
[Left]: 16 March 1948
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Hartland Molson
[Lifespan]: 1907–2002
[Party]: I
[Prov.]: QC
[Entered]: 28 July 1955
[Left]: 31 May 1993
[Appointed by]: St-Laurent
[Left due to]: resignation
[For life?]: Y -
[Senator]: Lucie Moncion
[Lifespan]: 1958–
[Party]: NA
[Prov.]: ON
[Entered]: 10 November 2016
[Left]: present
[Appointed by]: Trudeau, J.
[Left due to]: —
[For life?]: -
[Senator]: Gustave Monette
[Lifespan]: 1887–1969
[Party]: PC
[Prov.]: QC
[Entered]: 12 October 1957
[Left]: 23 December 1969
[Appointed by]: Diefenbaker
[Left due to]: death
[For life?]: Y -
[Senator]: Donald Montgomery
[Lifespan]: 1808–1893
[Party]: C
[Prov.]: PE
[Entered]: 18 October 1873
[Left]: 31 July 1893
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Hippolyte Montplaisir
[Lifespan]: 1839–1927
[Party]: LC
[Prov.]: QC
[Entered]: 9 February 1891
[Left]: 20 June 1927
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Wilfred Moore
[Lifespan]: 1942–
[Party]: L
[Prov.]: NS
[Entered]: 26 September 1996
[Left]: 14 January 2017
[Appointed by]: Chrétien
[Left due to]: retirement
[For life?]: -
[Senator]: Lucien Moraud
[Lifespan]: 1885–1951
[Party]: C
[Prov.]: QC
[Entered]: 30 December 1933
[Left]: 29 May 1951
[Appointed by]: Bennett
[Left due to]: death
[For life?]: Y -
[Senator]: Yves Morin
[Lifespan]: 1929–
[Party]: L
[Prov.]: QC
[Entered]: 8 March 2001
[Left]: 28 November 2004
[Appointed by]: Chrétien
[Left due to]: retirement
[For life?]: -
[Senator]: Oliver Mowat
[Lifespan]: 1820–1903
[Party]: L
[Prov.]: ON
[Entered]: 15 July 1896
[Left]: 18 November 1897
[Appointed by]: Laurier
[Left due to]: resignation
[For life?]: Y -
[Senator]: Robert Muir
[Lifespan]: 1919–2011
[Party]: PC
[Prov.]: NS
[Entered]: 26 March 1979
[Left]: 10 November 1994
[Appointed by]: Trudeau, P.
[Left due to]: retirement
[For life?]: -
[Senator]: William Muirhead
[Lifespan]: 1819–1884
[Party]: L
[Prov.]: NB
[Entered]: 4 January 1873
[Left]: 29 December 1884
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Robert Alexander Mulholland
[Lifespan]: 1860–1927
[Party]: C
[Prov.]: ON
[Entered]: 12 March 1918
[Left]: 1 October 1927
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: Henry Mullins
[Lifespan]: 1861–1952
[Party]: C
[Prov.]: MB
[Entered]: 14 August 1935
[Left]: 5 September 1950
[Appointed by]: Bennett
[Left due to]: resignation
[For life?]: Y -
[Senator]: Jim Munson
[Lifespan]: 1946–
[Party]: L
[Prov.]: ON
[Entered]: 10 December 2003
[Left]: present
[Appointed by]: Chrétien
[Left due to]: —
[For life?]: -
[Senator]: James Murdock
[Lifespan]: 1871–1949
[Party]: L
[Prov.]: ON
[Entered]: 20 March 1930
[Left]: 15 May 1949
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Charles Murphy
[Lifespan]: 1862–1935
[Party]: L
[Prov.]: ON
[Entered]: 5 September 1925
[Left]: 24 November 1935
[Appointed by]: King
[Left due to]: death
[For life?]: Y -
[Senator]: Edward Murphy
[Lifespan]: 1818–1895
[Party]: LC
[Prov.]: QC
[Entered]: 30 May 1889
[Left]: 5 December 1895
[Appointed by]: Macdonald
[Left due to]: death
[For life?]: Y -
[Senator]: Patrick Charles Murphy
[Lifespan]: 1868–1925
[Party]: C
[Prov.]: PE
[Entered]: 20 November 1912
[Left]: 6 March 1925
[Appointed by]: Borden
[Left due to]: death
[For life?]: Y -
[Senator]: Lowell Murray
[Lifespan]: 1936–
[Party]: PC
[Prov.]: ON
[Entered]: 13 September 1979
[Left]: 26 September 2011
[Appointed by]: Clark
[Left due to]: retirement
[For life?]:
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