Former Warren County Ohio Auditors
| Matt Nolan | Served from 2015 to present |
| Nick Nelson | Served from 1987 through 2015 (retired) |
| Leslie J. Spaeth | Served from 1963 through 1987 (retired) |
| James D. Templeton | Served from 1959 through 1963 (defeated) |
| Marvin R. Stahl | Served from 1956 through 1959 (defeated) |
| A. M. Parker | Served 1939 through 1955 |
| T. C. Patterson | Served 1910 through ? |
| S. A. Stillwell | Served 1902 through 1909 |
| Charles E. King | Served 1901 |
| George W. Smith | Served 1899 through 1900 |
| I.N. Walker | Served 1890 through 1898 |
| Ellsworth Benham | Served 1889 |
| A. H. Graham | Served from 1881 through 1888 |
| C. W. Randall | Served from 1874 through 1880 |
| William S. Dynes | Served from 1868 through 1873 |
| James W. Ross | Served from 1866 through 1867 |
| O. C. Maxwell | Served from 1864 through 1865 |
| George W. Smith | Served from 1862 through 1863 |
| Matthias Corwin | Served from 1858 through 1861 |
| Jacob Koogle | Served from 1853 through 1857 |
| John C. Skinner | Served from 1844 through 1852 |
| Allen Wright | Served from 1824 through 1843 |
| George J. Smith | Served from 1823 through 1824 |
| D. F. Reeder | Served from 1821 through 1822 |
| Michael H. Johnson | Served from 1820 through 1821 |
This office was created in 1820.