| # | Name | Party | Dates
|
|---|
| 1 | Nelson Dewey | Democrat | 1848 - 1852
|
| 2 | Leonard J. Farwell | Whig | 1852 - 1854
|
| 3 | William A. Barstow | Democrat | 1854 - 1856
|
| 4 | Arthur MacArthur, Sr. | Democrat | 1856 - 1856
|
| 5 | Coles Bashford | Republican | 1856 - 1858
|
| 6 | Alexander W. Randall | Republican | 1858 - 1862
|
| 7 | Louis P. Harvey | Republican | 1862 - 1862
|
| 8 | Edward Salomon | Republican | 1862 - 1864
|
| 9 | James T. Lewis | Republican | 1864 - 1866
|
| 10 | Lucius Fairchild | Republican | 1866 - 1872
|
| 11 | Cadwallader C. Washburn | Republican | 1872 - 1874
|
| 12 | William R. Taylor | Democrat | 1874 - 1876
|
| 13 | Harrison Ludington | Republican | 1876 - 1878
|
| 14 | William E. Smith | Republican | 1878 - 1882
|
| 15 | Jeremiah McLain Rusk | Republican | 1882 - 1889
|
| 16 | William D. Hoard | Republican | 1889 - 1891
|
| 17 | George W. Peck | Democrat | 1891 - 1895
|
| 18 | William H. Upham | Republican | 1895 - 1897
|
| 19 | Edward Scofield | Republican | 1897 - 1901
|
| 20 | Robert M. La Follette, Sr. | Republican | 1901 - 1906
|
| 21 | James O. Davidson | Republican | 1906 - 1911
|
| 22 | Francis E. McGovern | Republican | 1911 - 1915
|
| 23 | Emanuel L. Philipp | Republican | 1915 - 1921
|
| 24 | John J. Blaine | Republican | 1921 - 1927
|
| 25 | Fred R. Zimmerman | Republican | 1927 - 1929
|
| 26 | Walter J. Kohler, Sr. | Republican | 1929 - 1931
|
| 27 | Philip F. La Follette | Republican | 1931 - 1933
|
| 28 | Albert G. Schmedeman | Democrat | 1933 - 1935
|
| 29 | Philip F. La Follette | Progressive | 1935 - 1939
|
| 30 | Julius P. Heil | Republican | 1939 - 1943
|
| 31 | Walter S. Goodland | Republican | 1943 - 1947
|
| 32 | Oscar Rennebohm | Republican | 1947 - 1951
|
| 33 | Walter J. Kohler, Jr. | Republican | 1951 - 1957
|
| 34 | Vernon W. Thomson | Republican | 1957 - 1959
|
| 35 | Gaylord A. Nelson | Democrat | 1959 - 1963
|
| 36 | John W. Reynolds | Democrat | 1963 - 1965
|
| 37 | Warren P. Knowles | Republican | 1965 - 1971
|
| 38 | Patrick J. Lucey | Democrat | 1971 - 1977
|
| 39 | Martin J. Schreiber | Democrat | 1977 - 1979
|
| 40 | Lee S. Dreyfus | Republican | 1979 - 1983
|
| 41 | Anthony S. Earl | Democrat | 1983 - 1987
|
| 42 | Tommy Thompson | Republican | 1987 - 2001
|
| 43 | Scott McCallum | Republican | 2001 - 2003
|
| 44 | Jim Doyle | Democrat | 2003 -
|
