List of United States senators from South Dakota

South Dakota was admitted to the Union on November 2, 1889, and elects U.S. senators to class 2 and class 3. Its current U.S. senators are Republicans John Thune (since 2005) and Mike Rounds (since 2015). Karl E. Mundt is South Dakota's longest-serving senator (1948–1973). South Dakota is one of fifteen states alongside Arizona, Colorado, Florida, Georgia, Hawaii, Idaho, Indiana, Louisiana, Maine, Massachusetts, Minnesota, Missouri, Nevada and Utah to have a younger senior senator and an older junior senator.

List of senators
! rowspan=6 | 1 ! 1
 * - style="height:2em"
 * rowspan=6 align=left | RichardFPettigrew.jpg Richard Pettigrew
 * rowspan=4 | Republican
 * rowspan=6 nowrap | Nov 2, 1889 – Mar 3, 1901
 * rowspan=3 | Elected in 1889.
 * rowspan=3 | 1
 * 1
 * Elected in 1889.Lost re-election.
 * nowrap | Nov 2, 1889 – Mar 3, 1891
 * | Republican
 * align=right | GideonMoody.jpg Gideon C. Moody
 * align=right | GideonMoody.jpg Gideon C. Moody


 * - style="height:2em"
 * rowspan=3 | 2
 * rowspan=3 | Elected in 1891.
 * rowspan=3 | Elected in 1891.

! rowspan=6 | 2
 * rowspan=6 nowrap | Mar 4, 1891 – Jul 1, 1901
 * | Independent
 * rowspan=6 align=right | James Henderson Kyle.jpg James H. Kyle


 * - style="height:2em"
 * rowspan=4 | Populist
 * rowspan=4 | Populist


 * - style="height:2em"
 * rowspan=3 | Re-elected in 1894.Lost re-election.
 * rowspan=3 | 2


 * - style="height:2em"
 * rowspan=2 | Silver Republican
 * rowspan=5 | 3
 * rowspan=3 | Re-elected in 1897. Died.
 * rowspan=3 | Re-elected in 1897. Died.


 * - style="height:2em"

! rowspan=8 | 2
 * - style="height:2em"
 * rowspan=8 align=left | Robert Gamble.jpg  Robert J. Gamble
 * rowspan=8 | Republican
 * rowspan=8 nowrap | Mar 4, 1901 – Mar 3, 1913
 * rowspan=5 | Elected in 1901.
 * rowspan=5 | 3
 * | Republican
 * | Republican


 * - style="height:2em"
 * nowrap | Jul 1, 1901 – Jul 11, 1901
 * colspan=3 | Vacant
 * colspan=3 | Vacant

! rowspan=4 | 3
 * - style="height:2em"
 * Appointed to continue Kyle's term.Elected in 1903 to finish Kyle's term.
 * rowspan=4 nowrap | Jul 11, 1901 – Mar 3, 1909
 * rowspan=4 | Republican
 * rowspan=4 align=right | Kittredgealfred.jpg Alfred B. Kittredge


 * - style="height:2em"
 * rowspan=3 | 4
 * rowspan=3 | Elected to a full term in 1903. Lost renomination.
 * rowspan=3 | Elected to a full term in 1903. Lost renomination.


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 1907.Lost renomination.
 * rowspan=3 | 4

! rowspan=3 | 4
 * - style="height:2em"
 * rowspan=3 | 5
 * rowspan=3 | Elected in 1909.Lost renomination.
 * rowspan=3 nowrap | Mar 4, 1909 – Mar 3, 1915
 * rowspan=3 | Republican
 * rowspan=3 align=right | Crawfordcoe.jpg Coe Crawford
 * rowspan=3 align=right | Crawfordcoe.jpg Coe Crawford


 * - style="height:2em"

! rowspan=6 | 3
 * - style="height:2em"
 * rowspan=6 align=left | ThomasSterling.jpg Thomas Sterling
 * rowspan=6 | Republican
 * rowspan=6 nowrap | Mar 4, 1913 – Mar 3, 1925
 * rowspan=3 | Elected in 1913.
 * rowspan=3 | 5

! rowspan=3 | 5
 * - style="height:2em"
 * rowspan=3 | 6
 * rowspan=3 | Elected in 1914.Retired.
 * rowspan=3 nowrap | Mar 4, 1915 – Mar 3, 1921
 * rowspan=3 | Democratic
 * rowspan=3 align=right | ESJohnson.jpg Edwin S. Johnson
 * rowspan=3 align=right | ESJohnson.jpg Edwin S. Johnson


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 1918.Lost renomination.
 * rowspan=3 | 6

! rowspan=8 | 6
 * - style="height:2em"
 * rowspan=3 | 7
 * rowspan=3 | Elected in 1920.
 * rowspan=8 nowrap | Mar 4, 1921 – Dec 20, 1936
 * rowspan=8 | Republican
 * rowspan=8 align=right | PeterNorbeck R-SD.jpg Peter Norbeck
 * rowspan=8 align=right | PeterNorbeck R-SD.jpg Peter Norbeck


 * - style="height:2em"

! rowspan=3 | 4
 * - style="height:2em"
 * rowspan=3 align=left | WHMcMaster.jpg William McMaster
 * rowspan=3 | Republican
 * rowspan=3 nowrap | Mar 4, 1925 – Mar 3, 1931
 * rowspan=3 | Elected in 1924.Lost re-election.
 * rowspan=3 | 7


 * - style="height:2em"
 * rowspan=3 | 8
 * rowspan=3 | Re-elected in 1926.
 * rowspan=3 | Re-elected in 1926.


 * - style="height:2em"

! rowspan=9 | 5
 * - style="height:2em"
 * rowspan=9 align=left | William John Bulow.jpg William J. Bulow
 * rowspan=9 | Democratic
 * rowspan=9 nowrap | Mar 4, 1931 – Jan 3, 1943
 * rowspan=5 | Elected in 1930.
 * rowspan=5 | 8


 * - style="height:2em"
 * rowspan=6 | 9
 * rowspan=2 | Re-elected in 1932.Died.
 * rowspan=2 | Re-elected in 1932.Died.


 * - style="height:2em"


 * - style="height:2em"
 * nowrap | Dec 20, 1936 – Dec 29, 1936
 * colspan=3 | Vacant
 * colspan=3 | Vacant

! rowspan=2 | 7
 * - style="height:2em"
 * rowspan=2 | Appointed to continue Norbeck's term.Lost nomination to a full term.
 * rowspan=2 nowrap | Dec 29, 1936 – Nov 8, 1938
 * rowspan=2 | Democratic
 * rowspan=2 align=right | Herbert Emery Hitchcock.jpg Herbert Hitchcock


 * - style="height:2em"
 * rowspan=4 | Re-elected in 1936.Lost renomination.
 * rowspan=4 | 9

! 8
 * - style="height:2em"
 * Elected to finish Norbeck's term.Retired.
 * nowrap | Nov 9, 1938 – Jan 3, 1939
 * | Republican
 * align=right | Gladys Pyle.jpg Gladys Pyle

! rowspan=10 | 9
 * - style="height:2em"
 * rowspan=3 | 10
 * rowspan=3 | Elected in 1938.
 * rowspan=10 nowrap | Jan 3, 1939 – Jan 3, 1951
 * rowspan=10 | Republican
 * rowspan=10 align=right | John Chandler Gurney.jpg Chan Gurney
 * rowspan=10 align=right | John Chandler Gurney.jpg Chan Gurney


 * - style="height:2em"

! rowspan=3 | 6
 * - style="height:2em"
 * rowspan=3 align=left | BushfieldH.jpg Harlan J. Bushfield
 * rowspan=3 | Republican
 * rowspan=3 nowrap | Jan 3, 1943 – Sep 27, 1948
 * rowspan=3 | Elected in 1942.Died.
 * rowspan=7 | 10


 * - style="height:2em"
 * rowspan=7 | 11
 * rowspan=7 | Re-elected in 1944.Lost renomination.
 * rowspan=7 | Re-elected in 1944.Lost renomination.


 * - style="height:2em"


 * - style="height:2em"
 * colspan=3 | Vacant
 * nowrap | Sep 27, 1948 – Oct 6, 1948

! 7
 * - style="height:2em"
 * align=left | SenatorVeraBushfield(R-SD).jpg Vera C. Bushfield
 * | Republican
 * nowrap | Oct 6, 1948 – Dec 26, 1948
 * Appointed to finish her husband's term.Resigned when successor appointed.


 * - style="height:2em"
 * colspan=3 | Vacant
 * nowrap | Dec 26, 1948 – Dec 31, 1948

! rowspan=15 | 8
 * - style="height:2em"
 * rowspan=15 align=left | KarlEarlMundt.jpeg Karl Mundt
 * rowspan=15 | Republican
 * rowspan=15 nowrap | Dec 31, 1948 – Jan 3, 1973
 * Appointed to finish Bushfield's term, having been elected to the next term.


 * - style="height:2em"
 * rowspan=3 | Elected in 1948
 * rowspan=3 | 11

! rowspan=6 | 10
 * - style="height:2em"
 * rowspan=3 | 12
 * rowspan=3 | Elected in 1950.
 * rowspan=6 nowrap | Jan 3, 1951 – Jun 22, 1962
 * rowspan=6 | Republican
 * rowspan=6 align=right | Francis Higbee Case.jpg Francis Case
 * rowspan=6 align=right | Francis Higbee Case.jpg Francis Case


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 1954.
 * rowspan=3 | 12


 * - style="height:2em"
 * rowspan=5 | 13
 * rowspan=3 | Re-elected in 1956.Died.
 * rowspan=3 | Re-elected in 1956.Died.


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=5 | Re-elected in 1960.
 * rowspan=5 | 13


 * - style="height:2em"
 * nowrap | Jun 22, 1962 – Jul 9, 1962
 * colspan=3 | Vacant
 * colspan=3 | Vacant

! 11
 * - style="height:2em"
 * Appointed to finish Case's term.Lost election to full term.
 * nowrap | Jul 9, 1962 – Jan 3, 1963
 * | Republican
 * align=right | Bottum.jpg Joe Bottum

! rowspan=9 | 12
 * - style="height:2em"
 * rowspan=3 | 14
 * rowspan=3 | Elected in 1962.
 * rowspan=9 nowrap | Jan 3, 1963 – Jan 3, 1981
 * rowspan=9 | Democratic
 * rowspan=9 align=right | George McGovern bioguide.jpg George McGovern
 * rowspan=9 align=right | George McGovern bioguide.jpg George McGovern


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 1966.Retired.
 * rowspan=3 | 14


 * - style="height:2em"
 * rowspan=3 | 15
 * rowspan=3 | Re-elected in 1968.
 * rowspan=3 | Re-elected in 1968.


 * - style="height:2em"

! rowspan=3 | 9
 * - style="height:2em"
 * rowspan=3 align=left | James Abourezk.jpg James Abourezk
 * rowspan=3 | Democratic
 * rowspan=3 nowrap | Jan 3, 1973 – Jan 3, 1979
 * rowspan=3 | Elected in 1972.Retired.
 * rowspan=3 | 15


 * - style="height:2em"
 * rowspan=3 | 16
 * rowspan=3 | Re-elected in 1974.Lost re-election.
 * rowspan=3 | Re-elected in 1974.Lost re-election.


 * - style="height:2em"

! rowspan=9 | 10
 * - style="height:2em"
 * rowspan=9 align=left | Larry Pressler.jpg Larry Pressler
 * rowspan=9 | Republican
 * rowspan=9 nowrap | Jan 3, 1979 – Jan 3, 1997
 * rowspan=3 | Elected in 1978.
 * rowspan=3 | 16

! rowspan=3 | 13
 * - style="height:2em"
 * rowspan=3 | 17
 * rowspan=3 | Elected in 1980.Lost re-election.
 * rowspan=3 nowrap | Jan 3, 1981 – Jan 3, 1987
 * rowspan=3 | Republican
 * rowspan=3 align=right | JamesAbdnor.jpg James Abdnor
 * rowspan=3 align=right | JamesAbdnor.jpg James Abdnor


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 1984.
 * rowspan=3 | 17

! rowspan=9 | 14
 * - style="height:2em"
 * rowspan=3 | 18
 * rowspan=3 | Elected in 1986.
 * rowspan=9 nowrap | Jan 3, 1987 – Jan 3, 2005
 * rowspan=9 | Democratic
 * rowspan=9 align=right | Tom Daschle, official Senate photo.jpg Tom Daschle
 * rowspan=9 align=right | Tom Daschle, official Senate photo.jpg Tom Daschle


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 1990.Lost re-election.
 * rowspan=3 | 18


 * - style="height:2em"
 * rowspan=3 | 19
 * rowspan=3 | Re-elected in 1992.
 * rowspan=3 | Re-elected in 1992.


 * - style="height:2em"

! rowspan=9 | 11
 * - style="height:2em"
 * rowspan=9 align=left | Tim Johnson official portrait, 2009.jpg Tim Johnson
 * rowspan=9 | Democratic
 * rowspan=9 nowrap | Jan 3, 1997 – Jan 3, 2015
 * rowspan=3 | Elected in 1996.
 * rowspan=3 | 19


 * - style="height:2em"
 * rowspan=3 | 20
 * rowspan=3 | Re-elected in 1998.Lost re-election.
 * rowspan=3 | Re-elected in 1998.Lost re-election.


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 2002.
 * rowspan=3 | 20

! rowspan=12 | 15
 * - style="height:2em"
 * rowspan=3 | 21
 * rowspan=3 | Elected in 2004.
 * rowspan=12 nowrap | Jan 3, 2005 – present
 * rowspan=12 | Republican
 * rowspan=12 align=right | John Thune, official portrait, 111th Congress.jpg John Thune
 * rowspan=12 align=right | John Thune, official portrait, 111th Congress.jpg John Thune


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 2008.Retired.
 * rowspan=3 | 21


 * - style="height:2em"
 * rowspan=3 | 22
 * rowspan=3 | Re-elected in 2010.
 * rowspan=3 | Re-elected in 2010.


 * - style="height:2em"

! rowspan=6 | 12
 * - style="height:2em"
 * rowspan=6 align=left | Mike Rounds official Senate portrait.jpg Mike Rounds
 * rowspan=6 | Republican
 * rowspan=6 nowrap | Jan 3, 2015 – present
 * rowspan=3 | Elected in 2014.
 * rowspan=3 | 22


 * - style="height:2em"
 * rowspan=3 | 23
 * rowspan=3 | Re-elected in 2016.
 * rowspan=3 | Re-elected in 2016.


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=3 | Re-elected in 2020.
 * rowspan=3 | 23


 * - style="height:2em"
 * rowspan=3|24
 * rowspan=3 | Re-elected in 2022.
 * rowspan=3 | Re-elected in 2022.


 * - style="height:2em"


 * - style="height:2em"
 * rowspan=2 colspan=5 | To be determined in the 2026 election.
 * rowspan=2| 24


 * - style="height:2em"
 * 25
 * colspan=5 | To be determined in the 2028 election.
 * colspan=5 | To be determined in the 2028 election.