Auditors of State of the State of Ohio: 1803 - present
Prior to the adoption of the Constitution in 1851, the term of the Auditor of State was three years. Under the provisions of the Constitution of 1851, the term is four years.
| Name of Auditor of State | Politics | County | Term of Office |
| Thomas Gibson | Rep. | Washington | 1803-1808 |
| Benjamin Hough | Rep. | Jefferson | 1808-1815 |
| Ralph Osborn | Rep. | Franklin | 1815-1833 |
| John A. Bryan | | Franklin | 1833-1839 |
| John Brough | Dem. | Cuyahoga | 1839-1845 |
| John Woods | Whig | Butler | 1845-1852 |
| William Duane Morgan | Dem. | Muskingum | 1852-1856 |
| Francis M. Wright | Whig | Champaign | 1856-1860 |
| Robert W. Taylor | Rep. | Mahoning | 1860-1863 |
| Oviatt Cole | Rep. | Medina | 1863-1864 |
| James H. Godman | Rep. | Marion | 1864-1872 |
| James Williams | Rep. | Franklin | 1872-1880 |
| John F. Oglevee | Rep. | Clark | 1880-1884 |
| Emil Kieswetter | Dem. | Franklin | 1884-1888 |
| Ebenezer W. Poe | Rep. | Wood | 1888-1896 |
| Walter D. Guilbert | Rep. | Noble | 1896-1909 |
| Edward M. Fullington | Rep. | Union | 1909-1913 |
| A. Vic Donahey | Dem. | Tuscarawas | 1913-1921 |
| Joseph T. Tracy | Rep. | Franklin | 1921-1937 |
| Joseph T. Ferguson | Dem. | Summit | 1937-1953 |
| James A. Rhodes | Rep. | Franklin | 1953-1963 |
| Roger W. Tracy | Rep. | Franklin | 1963-1964 |
| Chester W. Goble | Rep. | Franklin | 1964-1965 |
| Roger Cloud | Rep. | Logan | 1965-1966 |
| Archer E. Reilly | Rep. | Franklin | 1966-1967 |
| Roger Cloud | Rep. | Logan | 1967-1971 |
| Joseph T. Ferguson | Dem. | Franklin | 1971-1975 |
| Thomas E. Ferguson | Dem. | Hamilton | 1975-1995 |
| Jim Petro | Rep. | Cuyahoga | 1995-2003 |
| Betty Montgomery | Rep. | Wood | 2003-2007 |
| Mary Taylor | Rep. | Summit | 2007-2010 |
Dave Yost
| Rep.
| Delaware
| 2010-
|