| Member | Party | Years | Cong ress
 | Electoral history | 
| District established March 4, 1823 | 
|  Samuel Finley Vinton
 (Gallipolis)
 | Adams-Clay Democratic-Republican
 | March 4, 1823 – March 3, 1825
 | 18th 19th
 20th
 21st
 22nd
 | Elected in 1822. Re-elected in 1824.
 Re-elected in 1826.
 Re-elected in 1828.
 Re-elected in 1830.
 Redistricted to the 6th district.
 | 
| Anti-Jacksonian | March 4, 1825 – March 3, 1833
 | 
|  William Allen
 (Chillicothe)
 | Jacksonian | March 4, 1833 – March 3, 1835
 | 23rd | Elected in 1832. Lost re-election.
 | 
| William K. Bond (Chillicothe)
 | Anti-Jacksonian | March 4, 1835 – March 3, 1837
 | 24th 25th
 26th
 | Elected in 1834. Re-elected in 1836.
 Re-elected in 1838.
 Retired.
 | 
| Whig | March 4, 1837 – March 3, 1841
 | 
|  William Russell
 (Portsmouth)
 | Whig | March 4, 1841 – March 3, 1843
 | 27th | Elected in 1840. [data missing]
 | 
| Joseph J. McDowell (Hillsboro)
 | Democratic | March 4, 1843 – March 3, 1847
 | 28th 29th
 | Elected in 1843. Re-elected in 1844.
 [data missing]
 | 
| Jonathan D. Morris (Batavia)
 | Democratic | March 4, 1847 – March 3, 1851
 | 30th 31st
 | Elected in 1846 after Rep-elect Thomas L. Hamer died before start of term. Re-elected in 1848.
 [data missing]
 | 
| Nelson Barrere (Hillsboro)
 | Whig | March 4, 1851 – March 3, 1853
 | 32nd | Elected in 1850. Lost re-election.
 | 
|  Aaron Harlan
 (Yellow Springs)
 | Whig | March 4, 1853 – March 3, 1855
 | 33rd 34th
 35th
 | Elected in 1852. Re-elected in 1854.
 Re-elected in 1856.
 Lost re-election.
 | 
| Opposition | March 4, 1855 – March 3, 1857
 | 
| Republican | March 4, 1857 – March 3, 1859
 | 
|  Thomas Corwin
 (Lebanon)
 | Republican | March 4, 1859 – March 12, 1861
 | 36th 37th
 | Elected in 1858. Re-elected in 1860.
 Resigned to become U.S. Minister to Mexico.
 | 
| Vacant | March 12, 1861 – July 4, 1861
 | 37th |  | 
|  Richard A. Harrison
 (London)
 | Union | July 4, 1861 – March 3, 1863
 | Elected to finish Corwin's term. [data missing]
 | 
|  Samuel S. Cox
 (Columbus)
 | Democratic | March 4, 1863 – March 3, 1865
 | 38th | Redistricted from the 12th district and re-elected in 1862. [data missing]
 | 
|  Samuel Shellabarger
 (Springfield)
 | Republican | March 4, 1865 – March 3, 1869
 | 39th 40th
 | Elected in 1864. Re-elected in 1866.
 [data missing]
 | 
|  James J. Winans
 (Xenia)
 | Republican | March 4, 1869 – March 3, 1871
 | 41st | Elected in 1868. [data missing]
 | 
|  Samuel Shellabarger
 (Springfield)
 | Republican | March 4, 1871 – March 3, 1873
 | 42nd | Elected in 1870. [data missing]
 | 
|  Lawrence T. Neal
 (Chillicothe)
 | Democratic | March 4, 1873 – March 3, 1877
 | 43rd 44th
 | Elected in 1872. Re-elected in 1874.
 [data missing]
 | 
|  Henry L. Dickey
 (Greenfield)
 | Democratic | March 4, 1877 – March 3, 1879
 | 45th | Elected in 1876. Redistricted to the 11th district.
 | 
|  Frank H. Hurd
 (Toledo)
 | Democratic | March 4, 1879 – March 3, 1881
 | 46th | Elected in 1878. [data missing]
 | 
|  John P. Leedom
 (West Union)
 | Democratic | March 4, 1881 – March 3, 1883
 | 47th | Elected in 1880. [data missing]
 | 
|  Henry Lee Morey
 (Hamilton)
 | Republican | March 4, 1883 – June 20, 1884
 | 48th | Lost contested election | 
|  James E. Campbell
 (Hamilton)
 | Democratic | June 20, 1884 – March 3, 1885
 | 48th | Won contested election. Redistricted to the 3rd district.
 | 
|  George E. Seney
 (Tiffin)
 | Democratic | March 4, 1885 – March 3, 1887
 | 49th | Redistricted from the 5th district and re-elected in 1884. Redistricted to the 5th district.
 | 
|  James E. Campbell
 (Hamilton)
 | Democratic | March 4, 1887 – March 3, 1889
 | 50th | Redistricted from the 3rd district and re-elected in 1886. [data missing]
 | 
|  Henry Lee Morey
 (Hamilton)
 | Republican | March 4, 1889 – March 3, 1891
 | 51st | Elected in 1888. [data missing]
 | 
|  William E. Haynes
 (Fremont)
 | Democratic | March 4, 1891 – March 3, 1893
 | 52nd | Redistricted from the 10th district and re-elected in 1890. [data missing]
 | 
|  George W. Wilson
 (London)
 | Republican | March 4, 1893 – March 3, 1897
 | 53rd 54th
 | Elected in 1892. Re-elected in 1894.
 [data missing]
 | 
|  Walter L. Weaver
 (Springfield)
 | Republican | March 4, 1897 – March 3, 1901
 | 55th 56th
 | Elected in 1896. Re-elected in 1898.
 [data missing]
 | 
|  Thomas B. Kyle
 (Troy)
 | Republican | March 4, 1901 – March 3, 1905
 | 57th 58th
 | Elected in 1900. Re-elected in 1902.
 [data missing]
 | 
|  J. Warren Keifer
 (Springfield)
 | Republican | March 4, 1905 – March 3, 1911
 | 59th 60th
 61st
 | Elected in 1904. Re-elected in 1906.
 Re-elected in 1908.
 [data missing]
 | 
|  James D. Post
 (Washington Courthouse)
 | Democratic | March 4, 1911 – March 3, 1915
 | 62nd 63rd
 | Elected in 1910. Re-elected in 1912.
 [data missing]
 | 
|  Simeon D. Fess
 (Yellow Springs)
 | Republican | March 4, 1915 – March 3, 1923
 | 64th 65th
 66th
 67th
 | Redistricted from the 6th district and re-elected in 1914. Re-elected in 1916.
 Re-elected in 1918.
 Re-elected in 1920.
 Retired to run for U.S. senator.
 | 
|  Charles Brand
 (Urbana)
 | Republican | March 4, 1923 – March 3, 1933
 | 68th 69th
 70th
 71st
 72nd
 | Elected in 1922. Re-elected in 1924.
 Re-elected in 1926.
 Re-elected in 1928.
 Re-elected in 1930.
 Retired.
 | 
| Leroy T. Marshall (Xenia)
 | Republican | March 4, 1933 – January 3, 1937
 | 73rd 74th
 | Elected in 1932. Re-elected in 1934.
 Lost re-election.
 | 
|  Arthur W. Aleshire
 (Springfield)
 | Democratic | January 3, 1937 – January 3, 1939
 | 75th | Elected in 1936. Lost re-election.
 | 
|  Clarence J. Brown
 (Blanchester)
 | Republican | January 3, 1939 – August 23, 1965
 | 76th 77th
 78th
 79th
 80th
 81st
 82nd
 83rd
 84th
 85th
 86th
 87th
 88th
 89th
 | Elected in 1938. Re-elected in 1940.
 Re-elected in 1942.
 Re-elected in 1944.
 Re-elected in 1946.
 Re-elected in 1948.
 Re-elected in 1950.
 Re-elected in 1952.
 Re-elected in 1954.
 Re-elected in 1956.
 Re-elected in 1958.
 Re-elected in 1960.
 Re-elected in 1962.
 Re-elected in 1964.
 Died.
 | 
| Vacant | August 23, 1965 – November 2, 1965
 | 89th |  | 
|  Bud Brown
 (Urbana)
 | Republican | November 2, 1965 – January 3, 1983
 | 89th 90th
 91st
 92nd
 93rd
 94th
 95th
 96th
 97th
 | Elected to finish his father's term. Re-elected in 1966.
 Re-elected in 1968.
 Re-elected in 1970.
 Re-elected in 1972.
 Re-elected in 1974.
 Re-elected in 1976.
 Re-elected in 1978.
 Re-elected in 1980.
 Retired to run for governor.
 | 
|  Mike DeWine
 (Cedarville)
 | Republican | January 3, 1983 – January 3, 1991
 | 98th 99th
 100th
 101st
 | Elected in 1982. Re-elected in 1984.
 Re-elected in 1986.
 Re-elected in 1988.
 Retired to run for Lieutenant Governor of Ohio.
 | 
|  Dave Hobson
 (Springfield)
 | Republican | January 3, 1991 – January 3, 2009
 | 102nd 103rd
 104th
 105th
 106th
 107th
 108th
 109th
 110th
 | Elected in 1990. Re-elected in 1992.
 Re-elected in 1994.
 Re-elected in 1996.
 Re-elected in 1998.
 Re-elected in 2000.
 Re-elected in 2002.
 Re-elected in 2004.
 Re-elected in 2006.
 Retired.
 | 
|  Steve Austria
 (Beavercreek)
 | Republican | January 3, 2009 – January 3, 2013
 | 111th 112th
 | Elected in 2008. Re-elected in 2010.
 Retired.
 | 
|  Bob Gibbs
 (Lakeville)
 | Republican | January 3, 2013 – January 3, 2023
 | 113th 114th
 115th
 116th
 117th
 | Redistricted from the 18th district and re-elected in 2012. Re-elected in 2014.
 Re-elected in 2016.
 Re-elected in 2018.
 Re-elected in 2020
 Retired.
 | 
|  Max Miller
 (Rocky River)
 | Republican | January 3, 2023 – present
 | 118th 119th
 | Elected in 2022. Re-elected in 2024.
 |