| Arthur C Mellette | 22 Mar 1889 – 03 Jan 1893 | 1842–1896 | Watertown |
| Charles H Sheldon | 03 Jan 1893 – 01 Jan 1897 | 1840–1898 | Pierpont |
| Andrew E Lee | 01 Jan 1897 – 08 Jan 1901 | 1847–1934 | Vermillion |
| Charles N Herreid | 08 Jan 1901 – 03 Jan 1905 | 1857–1928 | Eureka |
| Samuel H Elrod | 03 Jan 1905 – 08 Jan 1907 | 1856–1935 | Clark |
| Coe I Crawford | 08 Jan 1907 – 05 Jan 1909 | 1858–1944 | Huron |
| Robert S Vessey | 05 Jan 1909 – 07 Jan 1913 | 1858–1929 | Wessington Springs |
| Frank M Byrne | 07 Jan 1913 – 02 Jan 1917 | 1858–1927 | Faulkton |
| Peter Norbeck | 02 Jan 1917 – 04 Jan 1921 | 1870–1936 | Redfield |
| William H McMaster | 04 Jan 1921 – 06 Jan 1925 | 1877–1968 | Yankton |
| Carl Gunderson | 06 Jan 1925 – 04 Jan 1927 | 1864–1933 | Mitchell |
| William J Bulow | 04 Jan 1927 – 06 Jan 1931 | 1869–1960 | Beresford |
| Warren Green | 06 Jan 1931 – 03 Jan 1933 | 1870–1945 | Hazel |
| Tom Berry | 03 Jan 1933 – 05 Jan 1937 | 1879–1951 | Belvidere |
| Leslie Jensen | 05 Jan 1937 – 03 Jan 1939 | 1892–1964 | Hot Springs |
| Harlan J Bushfield | 03 Jan 1939 – 05 Jan 1943 | 1882–1948 | Miller |
| Merrill Q Sharpe | 05 Jan 1943 – 07 Jan 1947 | 1883–1962 | Kennebec |
| George T Mickelson | 07 Jan 1947 – 02 Jan 1951 | 1903–1965 | Selby |
| Sigurd Anderson | 02 Jan 1951 – 04 Jan 1955 | 1904–1990 | Webster |
| Joe Foss | 04 Jan 1955 – 06 Jan 1959 | 1915–2003 | Sioux Falls |
| Ralph Herseth | 06 Jan 1959 – 03 Jan 1961 | 1909–1969 | Houghton |
| Archie M Gubbrud | 03 Jan 1961 – 05 Jan 1965 | 1910–1987 | Alcester |
| Nils Boe | 05 Jan 1965 – 07 Jan 1969 | 1913–1992 | Sioux Falls |
| Frank Farrar | 07 Jan 1969 – 05 Jan 1971 | 1929— | Britton |
| Richard F Kneip | 05 Jan 1971 – 24 Jul 1978 | 1933–1987 | Salem |
| Harvey L Wollman | 24 Jul 1978 – 01 Jan 1979 | 1935— | Hitchcock |
| William J Janklow | 01 Jan 1979 – 06 Jan 1987 | 1939— | Flandreau |
| George S Mickelson | 06 Jan 1987 – 19 Apr 1993 | 1941–1993 | Brookings |
| Walter Dale Miller | 19 Apr 1993 – 07 Jan 1995 | 1925— | New Underwood |
| William J Janklow | 05 Jan 1995 – 07 Jan 2003 | 1939— | Brandon |
| M Michael Rounds | 07 Jan 2003— | 1954- | Pierre |
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