SECRETARY OF STATE | PARTY | TERM OF SERVICE | TOWN OR CO. |
| Robert A. New | Dem-Rep | 11/7/1816- 12/6/1825 | Clark Co. |
| William W. Wick | Dem. | Commissioned 1/14/1825- 1/14/1829 | Connersville |
| James Morrison | Dem.* | Commissioned 1/14/1829- 1/14/1833 | Charleston |
| William Sheets | Whig | Commissioned 1/14/1833- 1/14/1837 | Madison |
| William J. Brown | Dem. | Commissioned 1/14/1837- 1/14/1841 | Rushville |
| William Sheets | Whig | 1/14/1841- 1/14/1845 | Madison |
| John H. Thompson | Whig | 1/14/1845-1/14/1849 | Clark Co. |
| Charles H. Test | Dem.** | 1/14/1849- 1/14/1851 | Wayne Co. |
| Nehemiah Hayden | Dem. | 1/14/1853- 1/14/1855 | Rush Co. |
| Erasmus B. Collins | Rep. | 1/14/1855- 1/14/1857 | Dearborn Co. |
| Daniel McClure | Dem. | 1/16/1857- 10/28/1858 | Marion Co. |
| Cyrus L. Dunham | Dem. | 10/28/1858- 1/15/1861 | New Albany |
| William A. Peelle | Rep. | 1/15/1861- 1/15/1863 | Winchester |
| James S. Athon | Dem. | 1/16/1863- 1/16/1865 | Marion Co. |
| Nelson Trusler | Rep. | 1/16/1865- 1/16/1869 | Connersville |
| Max F. A. Hoffman | Rep. | 1/16/1869- 1/16/1871 | Valparaiso |
| Norman Eddy | Dem. | 1/16/1871- 2/1/1872 | South Bend |
| John H. Farquar | Rep. | 2/1/1872- 1/16/1873 | Richmond |
| William W. Curry | Rep. | 1/16/1873- 1/16/1875 | Terre Haute |
| John E. Neff | Dem. | 1/16/1875- 1/16/1879 | Winchester |
| John G. Shanklin | Dem. | 1/16/1879- 1/16/1881 | Evansville |
| Emanuel R. Hawn | Rep. | 1/16/1881- 1/16/1883 | Leavenworth |
| William R. Myers | Dem. | 1/16/1883- 1/16/1887 | Anderson |
| Charles F. Griffin | Rep. | 1/16/1887- 1/16/1891 | Hammond |
| Claude Matthews | Dem. | 1/16/1891- 1/9/1893 | Vermillion |
| Myron D. King | Dem. | 1/9/1893- 1/17/1893 | Covington |
| William R. Myers | Dem. | 1/17/1893- 1/17/1895 | Anderson |
| William D. Owen | Rep. | 1/17/1895- 1/17/1899 | Bedford |
| Union B. Hunt | Rep. | 1/17/1899- 1/17/1903 | Randolph Co. |
| Daniel E. Storms | Rep. | 1/17/1903- 4/1/1906 | Stockwell |
| Fred A. Sims | Rep. | 4/1/1906- 11/27/1910 | Indianapolis |
| L.G. Ellingham | Dem. | 11/27/1910- 11/27/1914 | Decatur |
| Homer L. Cook | Dem. | 11/27/1914- 11/27/1916 | Indianapolis |
| Ed Jackson | Rep. | 11/27/1916- 11/27/1917 | Indianapolis |
| William A. Roach | Rep. | 11/22/1917- 1/17/1920 | Delphi |
| Ed Jackson | Rep. | 1/21/1920- 11/27/1924 | Indianapolis |
| Fred Schortemeier | Rep. | 12/1/1924- 12/1/1928 | Indianapolis |
| Otto G. Fifield | Rep. | 12/1/1928- 12/1/1930 | Crown Point |
| Frank Mayr, Jr. | Dem. | 12/1/1930- 12/1/1934 | South Bend |
| August G. Mueller | Dem. | 12/1/1934- 12/1/1938 | Indianapolis |
| James M. Tucker | Rep. | 12/1/1938- 7/25/1942 | Paoli |
| Maurice G. Robinson | Rep. | 7/25/1942- 12/1/1942 | Anderson |
| Rue J. Alexander | Rep. | 12/1/1942- 12/1/1946 | Pine Village |
| Thomas E. Bath, Jr. | Rep. | 12/2/1946- 12/1/1948 | South Bend |
| Charles F. Fleming | Dem. | 12/1/1948- 12/1/1950 | Hammond |
| Leland L. Smith | Rep. | 12/1/1950- 12/1/1952 | Logansport |
| Crawford F. Parker | Rep. | 12/1/1952- 12/1/1956 | New Castle |
| Frank A. Lenning | Rep. | 12/1/1956- 12/1/1958 | Bloomfield |
| John R. Walsh | Dem. | 12/1/1958- 12/1/1960 | Anderson |
| Charles O. Hendricks | Rep. | 12/1/1960- 12/1-1964 | Speed |
| John D. Bottorff | Dem. | 12/1/1964- 12/1/1966 | Indianapolis |
| Edgar D. Whitcomb | Rep. | 12/1/1966- 12/1/1968 | Seymour |
| William N. Salin | Rep. | 12/1/1968- 12/1/1970 | Ft. Wayne |
| Larry A. Conrad | Dem. | 12/1/1970- 12/1/1978 | Muncie |
| Edwin J. Simcox | Rep. | 12/1/1978- 12/1/1986 | Indianapolis |
| Birch Evan Bayh III | Dem. | 12/1/1986-1/9/1989 | Evansville |
| Joseph H. Hogsett | Dem. | 1/9/1989- 12/1/1994 | Indianapolis |
Sue Ann Gilroy | Rep. | 12/1/1994- 1/8/2002 | Crawfordsville |
Todd Rokita | Rep. | 1/8/2003- 1/6/2011 | Munster |
Charlie White | Rep. | 1/6/2011- 2/4/2012 | Fishers |
Jerry Bonnet (Interim) | 2/4/2012- 3/16/2012 | ||
Connie Lawson | Rep. | 3/16/2012- 3/16/2021 | Danville |
Holli Sullivan | Rep. | 3/16/2021- 1/9/2023 | Evansville |
Diego Morales | Rep. | 1/9/2023- present | Sellersburg |
Source: Indiana History Bulletin, vol. 44, no. 9, September 1967. Online version: https://indianamemory.contentdm.oclc.org/digital/collection/p16066coll16/id/13641/rec/41
* James Morrison was a Democrat at the time he held this office. Later he was a Republican and the first Indiana Attorney General.
** Charles Test was a Democrat at the time he held this office, later affiliating with the Fusion, Know Nothing, and Republican parties. [Sources: A Biographical Directory of the Indiana General Assembly, volume 1; Indiana Legislator Database, online biography for Charles H. Test]
IN MH 3-26-2025