# List of United States senators from Ohio

Ohio was admitted to the Union on March 1, 1803, and elects U.S. senators to class 1 and class 3. Its current U.S. senators are Republicans Bernie Moreno and Jon Husted (both serving since 2025). Not counting Vermont and Maine, where independents have caucused with the Democrats since 2001 and 2013, Ohio had the longest current split delegation, having had two senators from the opposite parties from 2007 until 2025. John Sherman was Ohio's longest-serving senator (1861–1877; 1881–1897).

## List of senators

| Class 1Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2006, 2012, 2018, and 2024. The next election will be in 2030. | Class 1Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2006, 2012, 2018, and 2024. The next election will be in 2030. | Class 1Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2006, 2012, 2018, and 2024. The next election will be in 2030. | Class 1Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2006, 2012, 2018, and 2024. The next election will be in 2030. | Class 1Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2006, 2012, 2018, and 2024. The next election will be in 2030. | Class 1Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2006, 2012, 2018, and 2024. The next election will be in 2030. | C | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2026 (special) and 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2026 (special) and 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2026 (special) and 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2026 (special) and 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2026 (special) and 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2026 (special) and 2028. |
| # | Senator | Party | Dates in office | Electoral history | T | C | T | Electoral history | Dates in office | Party | Senator | # |
| 1 | John Smith | Democratic- Republican | Apr 1, 1803 – Apr 25, 1808 | Elected in 1803.Resigned. | 1 | 8th | 1 | Elected in 1803.Retired. | Apr 1, 1803 – Mar 3, 1807 | Democratic- Republican | Thomas Worthington | 1 |
| 1 | John Smith | Democratic- Republican | Apr 1, 1803 – Apr 25, 1808 | Elected in 1803.Resigned. | 1 | 9th | 1 | Elected in 1803.Retired. | Apr 1, 1803 – Mar 3, 1807 | Democratic- Republican | Thomas Worthington | 1 |
| 1 | John Smith | Democratic- Republican | Apr 1, 1803 – Apr 25, 1808 | Elected in 1803.Resigned. | 1 | 10th | 2 | Elected in 1807.Resigned. | Mar 4, 1807 – Mar 3, 1809 | Democratic- Republican | Edward Tiffin | 2 |
| Vacant | Vacant | Vacant | Apr 25, 1808 – Dec 12, 1808 | | 1 | 10th | 2 | Elected in 1807.Resigned. | Mar 4, 1807 – Mar 3, 1809 | Democratic- Republican | Edward Tiffin | 2 |
| 2 | Return J. Meigs Jr. | Democratic- Republican | Dec 12, 1808 – Dec 8, 1810 | Elected in 1808 to finish Smith's term. | 1 | 10th | 2 | Elected in 1807.Resigned. | Mar 4, 1807 – Mar 3, 1809 | Democratic- Republican | Edward Tiffin | 2 |
| 2 | Return J. Meigs Jr. | Democratic- Republican | Dec 12, 1808 – Dec 8, 1810 | Elected in 1808 to full term.Resigned to become Governor of Ohio. | 2 | 11th | 2 | | Mar 4, 1809 – May 18, 1809 | Vacant | Vacant | Vacant |
| 2 | Return J. Meigs Jr. | Democratic- Republican | Dec 12, 1808 – Dec 8, 1810 | Elected in 1808 to full term.Resigned to become Governor of Ohio. | 2 | 11th | 2 | Appointed to continue Tiffin's term.Retired when successor elected. | May 18, 1809 – Dec 11, 1809 | Democratic- Republican | Stanley Griswold | 3 |
| Vacant | Vacant | Vacant | Dec 8, 1810 – Dec 15, 1810 | | 2 | 11th | 2 | Appointed to continue Tiffin's term.Retired when successor elected. | May 18, 1809 – Dec 11, 1809 | Democratic- Republican | Stanley Griswold | 3 |
| Vacant | Vacant | Vacant | Dec 8, 1810 – Dec 15, 1810 | | 2 | 11th | 2 | Elected in 1809 to finish Tiffin's term.Retired. | Dec 11, 1809 – Mar 3, 1813 | Democratic- Republican | Alexander Campbell | 4 |
| 3 | Thomas Worthington | Democratic- Republican | Dec 15, 1810 – Dec 1, 1814 | Elected in 1810 to finish Meigs's term.Resigned to become Governor of Ohio. | 2 | 11th | 2 | Elected in 1809 to finish Tiffin's term.Retired. | Dec 11, 1809 – Mar 3, 1813 | Democratic- Republican | Alexander Campbell | 4 |
| 3 | Thomas Worthington | Democratic- Republican | Dec 15, 1810 – Dec 1, 1814 | Elected in 1810 to finish Meigs's term.Resigned to become Governor of Ohio. | 2 | 12th | 2 | Elected in 1809 to finish Tiffin's term.Retired. | Dec 11, 1809 – Mar 3, 1813 | Democratic- Republican | Alexander Campbell | 4 |
| 3 | Thomas Worthington | Democratic- Republican | Dec 15, 1810 – Dec 1, 1814 | Elected in 1810 to finish Meigs's term.Resigned to become Governor of Ohio. | 2 | 13th | 3 | Elected in 1813.Retired. | Mar 4, 1813 – Mar 3, 1819 | Democratic- Republican | Jeremiah Morrow | 5 |
| Vacant | Vacant | Vacant | Dec 1, 1814 – Dec 10, 1814 | | 2 | 13th | 3 | Elected in 1813.Retired. | Mar 4, 1813 – Mar 3, 1819 | Democratic- Republican | Jeremiah Morrow | 5 |
| 4 | Joseph Kerr | Democratic- Republican | Dec 10, 1814 – Mar 3, 1815 | Elected in 1814 to finish Meigs's term.Retired. | 2 | 13th | 3 | Elected in 1813.Retired. | Mar 4, 1813 – Mar 3, 1819 | Democratic- Republican | Jeremiah Morrow | 5 |
| 5 | Benjamin Ruggles | Democratic- Republican | Mar 4, 1815 – Mar 3, 1833 | Elected in 1815. | 3 | 14th | 3 | Elected in 1813.Retired. | Mar 4, 1813 – Mar 3, 1819 | Democratic- Republican | Jeremiah Morrow | 5 |
| 5 | Benjamin Ruggles | Democratic- Republican | Mar 4, 1815 – Mar 3, 1833 | Elected in 1815. | 3 | 15th | 3 | Elected in 1813.Retired. | Mar 4, 1813 – Mar 3, 1819 | Democratic- Republican | Jeremiah Morrow | 5 |
| 5 | Benjamin Ruggles | Democratic- Republican | Mar 4, 1815 – Mar 3, 1833 | Elected in 1815. | 3 | 16th | 4 | Elected in 1819.Died. | Mar 4, 1819 – Dec 13, 1821 | Democratic- Republican | William A. Trimble | 6 |
| 5 | Benjamin Ruggles | Democratic- Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1821. | 4 | 17th | 4 | Elected in 1819.Died. | Mar 4, 1819 – Dec 13, 1821 | Democratic- Republican | William A. Trimble | 6 |
| 5 | Benjamin Ruggles | Democratic- Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1821. | 4 | 17th | 4 | | Dec 13, 1821 – Jan 3, 1822 | Vacant | Vacant | Vacant |
| 5 | Benjamin Ruggles | Democratic- Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1821. | 4 | 17th | 4 | Elected in 1822 to finish Trimble's term.Lost re-election. | Jan 3, 1822 – Mar 3, 1825 | Democratic- Republican | Ethan Allen Brown | 7 |
| 5 | Benjamin Ruggles | Democratic- Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1821. | 4 | 18th | 4 | Elected in 1822 to finish Trimble's term.Lost re-election. | Jan 3, 1822 – Mar 3, 1825 | Democratic- Republican | Ethan Allen Brown | 7 |
| 5 | Benjamin Ruggles | National Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1821. | 4 | 19th | 5 | Elected in 1824.Resigned to become U.S. Minister to Colombia. | Mar 4, 1825 – May 20, 1828 | National Republican | William Henry Harrison | 8 |
| 5 | Benjamin Ruggles | National Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1827.Retired. | 5 | 20th | 5 | Elected in 1824.Resigned to become U.S. Minister to Colombia. | Mar 4, 1825 – May 20, 1828 | National Republican | William Henry Harrison | 8 |
| 5 | Benjamin Ruggles | National Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1827.Retired. | 5 | 20th | 5 | | May 20, 1828 – Dec 10, 1828 | Vacant | Vacant | Vacant |
| 5 | Benjamin Ruggles | National Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1827.Retired. | 5 | 20th | 5 | Elected in 1828 to finish Harrison's term.Retired. | Dec 10, 1828 – Mar 3, 1831 | National Republican | Jacob Burnet | 9 |
| 5 | Benjamin Ruggles | National Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1827.Retired. | 5 | 21st | 5 | Elected in 1828 to finish Harrison's term.Retired. | Dec 10, 1828 – Mar 3, 1831 | National Republican | Jacob Burnet | 9 |
| 5 | Benjamin Ruggles | National Republican | Mar 4, 1815 – Mar 3, 1833 | Re-elected in 1827.Retired. | 5 | 22nd | 6 | Elected in 1830.Lost re-election. | Mar 4, 1831 – Mar 3, 1837 | National Republican | Thomas Ewing | 10 |
| 6 | Thomas Morris | Jacksonian | Mar 4, 1833 – Mar 3, 1839 | Elected in 1833.Lost re-election. | 6 | 23rd | 6 | Elected in 1830.Lost re-election. | Mar 4, 1831 – Mar 3, 1837 | National Republican | Thomas Ewing | 10 |
| 6 | Thomas Morris | Jacksonian | Mar 4, 1833 – Mar 3, 1839 | Elected in 1833.Lost re-election. | 6 | 24th | 6 | Elected in 1830.Lost re-election. | Mar 4, 1831 – Mar 3, 1837 | National Republican | Thomas Ewing | 10 |
| 6 | Thomas Morris | Democratic | Mar 4, 1833 – Mar 3, 1839 | Elected in 1833.Lost re-election. | 6 | 25th | 7 | Elected in 1837. | Mar 4, 1837 – Mar 3, 1849 | Democratic | William Allen | 11 |
| 7 | Benjamin Tappan | Democratic | Mar 4, 1839 – Mar 3, 1845 | Elected in 1838.Retired. | 7 | 26th | 7 | Elected in 1837. | Mar 4, 1837 – Mar 3, 1849 | Democratic | William Allen | 11 |
| 7 | Benjamin Tappan | Democratic | Mar 4, 1839 – Mar 3, 1845 | Elected in 1838.Retired. | 7 | 27th | 7 | Elected in 1837. | Mar 4, 1837 – Mar 3, 1849 | Democratic | William Allen | 11 |
| 7 | Benjamin Tappan | Democratic | Mar 4, 1839 – Mar 3, 1845 | Elected in 1838.Retired. | 7 | 28th | 8 | Re-elected in 1842.Lost re-election. | Mar 4, 1837 – Mar 3, 1849 | Democratic | William Allen | 11 |
| 8 | Thomas Corwin | Whig | Mar 4, 1845 – Jul 20, 1850 | Elected in 1844.Resigned to become U.S. Secretary of the Treasury. | 8 | 29th | 8 | Re-elected in 1842.Lost re-election. | Mar 4, 1837 – Mar 3, 1849 | Democratic | William Allen | 11 |
| 8 | Thomas Corwin | Whig | Mar 4, 1845 – Jul 20, 1850 | Elected in 1844.Resigned to become U.S. Secretary of the Treasury. | 8 | 30th | 8 | Re-elected in 1842.Lost re-election. | Mar 4, 1837 – Mar 3, 1849 | Democratic | William Allen | 11 |
| 8 | Thomas Corwin | Whig | Mar 4, 1845 – Jul 20, 1850 | Elected in 1844.Resigned to become U.S. Secretary of the Treasury. | 8 | 31st | 9 | Elected in 1849.Retired. | Mar 4, 1849 – Mar 3, 1855 | Free Soil | Salmon P. Chase | 12 |
| 9 | Thomas Ewing | Whig | Jul 20, 1850 – Mar 3, 1851 | Appointed to finish Corwin's term.Lost election to the next term. | 8 | 31st | 9 | Elected in 1849.Retired. | Mar 4, 1849 – Mar 3, 1855 | Free Soil | Salmon P. Chase | 12 |
| Vacant | Vacant | Vacant | Mar 4, 1851 – Mar 15, 1851 | | 9 | 32nd | 9 | Elected in 1849.Retired. | Mar 4, 1849 – Mar 3, 1855 | Free Soil | Salmon P. Chase | 12 |
| 10 | Benjamin Wade | Whig | Mar 15, 1851 – Mar 3, 1869 | Elected late in 1851. | 9 | 32nd | 9 | Elected in 1849.Retired. | Mar 4, 1849 – Mar 3, 1855 | Free Soil | Salmon P. Chase | 12 |
| 10 | Benjamin Wade | Whig | Mar 15, 1851 – Mar 3, 1869 | Elected late in 1851. | 9 | 33rd | 9 | Elected in 1849.Retired. | Mar 4, 1849 – Mar 3, 1855 | Free Soil | Salmon P. Chase | 12 |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Elected late in 1851. | 9 | 34th | 10 | Elected in 1854Lost re-election. | Mar 4, 1855 – Mar 3, 1861 | Democratic | George E. Pugh | 13 |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Re-elected in 1856. | 10 | 35th | 10 | Elected in 1854Lost re-election. | Mar 4, 1855 – Mar 3, 1861 | Democratic | George E. Pugh | 13 |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Re-elected in 1856. | 10 | 36th | 10 | Elected in 1854Lost re-election. | Mar 4, 1855 – Mar 3, 1861 | Democratic | George E. Pugh | 13 |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Re-elected in 1856. | 10 | 37th | 11 | Elected in 1860.Resigned to become U.S. Secretary of the Treasury. | Mar 4, 1861 – Mar 6, 1861 | Republican | Salmon P. Chase | 14 |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Re-elected in 1856. | 10 | 37th | 11 | | Mar 6, 1861 – Mar 21, 1861 | Vacant | Vacant | Vacant |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Re-elected in 1856. | 10 | 37th | 11 | Elected in 1861 to finish Chase's term. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Re-elected in 1863.Lost renomination. | 11 | 38th | 11 | Elected in 1861 to finish Chase's term. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Re-elected in 1863.Lost renomination. | 11 | 39th | 11 | Elected in 1861 to finish Chase's term. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 10 | Benjamin Wade | Republican | Mar 15, 1851 – Mar 3, 1869 | Re-elected in 1863.Lost renomination. | 11 | 40th | 12 | Re-elected in 1866. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 11 | Allen G. Thurman | Democratic | Mar 4, 1869 – Mar 3, 1881 | Elected in 1868. | 12 | 41st | 12 | Re-elected in 1866. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 11 | Allen G. Thurman | Democratic | Mar 4, 1869 – Mar 3, 1881 | Elected in 1868. | 12 | 42nd | 12 | Re-elected in 1866. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 11 | Allen G. Thurman | Democratic | Mar 4, 1869 – Mar 3, 1881 | Elected in 1868. | 12 | 43rd | 13 | Re-elected in 1872.Resigned to become U.S. Secretary of the Treasury. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 11 | Allen G. Thurman | Democratic | Mar 4, 1869 – Mar 3, 1881 | Re-elected in 1874.Lost re-election. | 13 | 44th | 13 | Re-elected in 1872.Resigned to become U.S. Secretary of the Treasury. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 11 | Allen G. Thurman | Democratic | Mar 4, 1869 – Mar 3, 1881 | Re-elected in 1874.Lost re-election. | 13 | 45th | 13 | Re-elected in 1872.Resigned to become U.S. Secretary of the Treasury. | Mar 21, 1861 – Mar 8, 1877 | Republican | John Sherman | 15 |
| 11 | Allen G. Thurman | Democratic | Mar 4, 1869 – Mar 3, 1881 | Re-elected in 1874.Lost re-election. | 13 | 45th | 13 | | Mar 8, 1877 – Mar 21, 1877 | Vacant | Vacant | Vacant |
| 11 | Allen G. Thurman | Democratic | Mar 4, 1869 – Mar 3, 1881 | Re-elected in 1874.Lost re-election. | 13 | 45th | 13 | Elected in 1877 to finish Sherman's term.Retired. | Mar 21, 1877 – Mar 3, 1879 | Republican | Stanley Matthews | 16 |
| 11 | Allen G. Thurman | Democratic | Mar 4, 1869 – Mar 3, 1881 | Re-elected in 1874.Lost re-election. | 13 | 46th | 14 | Election date unknown.Lost renomination. | Mar 4, 1879 – Mar 3, 1885 | Democratic | George H. Pendleton | 17 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Elected in 1881. | 14 | 47th | 14 | Election date unknown.Lost renomination. | Mar 4, 1879 – Mar 3, 1885 | Democratic | George H. Pendleton | 17 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Elected in 1881. | 14 | 48th | 14 | Election date unknown.Lost renomination. | Mar 4, 1879 – Mar 3, 1885 | Democratic | George H. Pendleton | 17 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Elected in 1881. | 14 | 49th | 15 | Elected in 1884.Retired. | Mar 4, 1885 – Mar 3, 1891 | Democratic | Henry B. Payne | 18 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Re-elected in 1886. | 15 | 50th | 15 | Elected in 1884.Retired. | Mar 4, 1885 – Mar 3, 1891 | Democratic | Henry B. Payne | 18 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Re-elected in 1886. | 15 | 51st | 15 | Elected in 1884.Retired. | Mar 4, 1885 – Mar 3, 1891 | Democratic | Henry B. Payne | 18 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Re-elected in 1886. | 15 | 52nd | 16 | Elected in 1890.Lost re-election. | Mar 4, 1891 – Mar 3, 1897 | Democratic | Calvin S. Brice | 19 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Re-elected in 1892.Resigned to become U.S. Secretary of State. | 16 | 53rd | 16 | Elected in 1890.Lost re-election. | Mar 4, 1891 – Mar 3, 1897 | Democratic | Calvin S. Brice | 19 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Re-elected in 1892.Resigned to become U.S. Secretary of State. | 16 | 54th | 16 | Elected in 1890.Lost re-election. | Mar 4, 1891 – Mar 3, 1897 | Democratic | Calvin S. Brice | 19 |
| 12 | John Sherman | Republican | Mar 4, 1881 – Mar 4, 1897 | Re-elected in 1892.Resigned to become U.S. Secretary of State. | 16 | 55th | 17 | Elected in 1896. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| 13 | Mark Hanna | Republican | Mar 5, 1897 – Feb 15, 1904 | Appointed to continue Sherman's term.Elected in 1898 to finish Sherman's term. | 16 | 55th | 17 | Elected in 1896. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| 13 | Mark Hanna | Republican | Mar 5, 1897 – Feb 15, 1904 | Elected in 1898 to the next term.Died. | 17 | 56th | 17 | Elected in 1896. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| 13 | Mark Hanna | Republican | Mar 5, 1897 – Feb 15, 1904 | Elected in 1898 to the next term.Died. | 17 | 57th | 17 | Elected in 1896. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| 13 | Mark Hanna | Republican | Mar 5, 1897 – Feb 15, 1904 | Elected in 1898 to the next term.Died. | 17 | 58th | 18 | Re-elected in 1902.Retired. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| Vacant | Vacant | Vacant | Feb 15, 1904 – Mar 23, 1904 | | 17 | 58th | 18 | Re-elected in 1902.Retired. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| 14 | Charles W. F. Dick | Republican | Mar 23, 1904 – Mar 3, 1911 | Elected in 1904 to finish Hanna's term. | 17 | 58th | 18 | Re-elected in 1902.Retired. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| 14 | Charles W. F. Dick | Republican | Mar 23, 1904 – Mar 3, 1911 | Elected in 1904 to the next term.Lost re-election. | 18 | 59th | 18 | Re-elected in 1902.Retired. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| 14 | Charles W. F. Dick | Republican | Mar 23, 1904 – Mar 3, 1911 | Elected in 1904 to the next term.Lost re-election. | 18 | 60th | 18 | Re-elected in 1902.Retired. | Mar 4, 1897 – Mar 3, 1909 | Republican | Joseph B. Foraker | 20 |
| 14 | Charles W. F. Dick | Republican | Mar 23, 1904 – Mar 3, 1911 | Elected in 1904 to the next term.Lost re-election. | 18 | 61st | 19 | Elected Jan 12, 1909.Retired. | Mar 4, 1909 – Mar 3, 1915 | Republican | Theodore E. Burton | 21 |
| 15 | Atlee Pomerene | Democratic | Mar 4, 1911 – Mar 3, 1923 | Elected Jan 10, 1911. | 19 | 62nd | 19 | Elected Jan 12, 1909.Retired. | Mar 4, 1909 – Mar 3, 1915 | Republican | Theodore E. Burton | 21 |
| 15 | Atlee Pomerene | Democratic | Mar 4, 1911 – Mar 3, 1923 | Elected Jan 10, 1911. | 19 | 63rd | 19 | Elected Jan 12, 1909.Retired. | Mar 4, 1909 – Mar 3, 1915 | Republican | Theodore E. Burton | 21 |
| 15 | Atlee Pomerene | Democratic | Mar 4, 1911 – Mar 3, 1923 | Elected Jan 10, 1911. | 19 | 64th | 20 | Elected in 1914.Retired to run for U.S. President.Resigned to become U.S. President. | Mar 4, 1915 – Jan 13, 1921 | Republican | Warren G. Harding | 22 |
| 15 | Atlee Pomerene | Democratic | Mar 4, 1911 – Mar 3, 1923 | Re-elected in 1916.Lost re-election. | 20 | 65th | 20 | Elected in 1914.Retired to run for U.S. President.Resigned to become U.S. President. | Mar 4, 1915 – Jan 13, 1921 | Republican | Warren G. Harding | 22 |
| 15 | Atlee Pomerene | Democratic | Mar 4, 1911 – Mar 3, 1923 | Re-elected in 1916.Lost re-election. | 20 | 66th | 20 | Elected in 1914.Retired to run for U.S. President.Resigned to become U.S. President. | Mar 4, 1915 – Jan 13, 1921 | Republican | Warren G. Harding | 22 |
| 15 | Atlee Pomerene | Democratic | Mar 4, 1911 – Mar 3, 1923 | Re-elected in 1916.Lost re-election. | 20 | 66th | 20 | Appointed to finish Harding's term, having been elected to the next term. | Jan 14, 1921 – Mar 30, 1928 | Republican | Frank B. Willis | 23 |
| 15 | Atlee Pomerene | Democratic | Mar 4, 1911 – Mar 3, 1923 | Re-elected in 1916.Lost re-election. | 20 | 67th | 21 | Elected in 1920. | Jan 14, 1921 – Mar 30, 1928 | Republican | Frank B. Willis | 23 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Elected in 1922. | 21 | 68th | 21 | Elected in 1920. | Jan 14, 1921 – Mar 30, 1928 | Republican | Frank B. Willis | 23 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Elected in 1922. | 21 | 69th | 21 | Elected in 1920. | Jan 14, 1921 – Mar 30, 1928 | Republican | Frank B. Willis | 23 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Elected in 1922. | 21 | 70th | 22 | Re-elected in 1926.Died. | Jan 14, 1921 – Mar 30, 1928 | Republican | Frank B. Willis | 23 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Elected in 1922. | 21 | 70th | 22 | | Mar 30, 1928 – Apr 5, 1928 | Vacant | Vacant | Vacant |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Elected in 1922. | 21 | 70th | 22 | Appointed to continue Willis's term.Lost nomination to finish Willis's term. | Apr 5, 1928 – Dec 14, 1928 | Democratic | Cyrus Locher | 24 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Elected in 1922. | 21 | 70th | 22 | Elected in 1928 to finish Willis's term.Died. | Dec 15, 1928 – Oct 28, 1929 | Republican | Theodore E. Burton | 25 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Re-elected in 1928.Lost re-election. | 22 | 71st | 22 | Elected in 1928 to finish Willis's term.Died. | Dec 15, 1928 – Oct 28, 1929 | Republican | Theodore E. Burton | 25 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Re-elected in 1928.Lost re-election. | 22 | 71st | 22 | | Oct 28, 1929 – Nov 5, 1929 | Vacant | Vacant | Vacant |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Re-elected in 1928.Lost re-election. | 22 | 71st | 22 | Appointed to continue Willis's term.Lost election to finish Willis's term. | Nov 5, 1929 – Nov 30, 1930 | Republican | Roscoe C. McCulloch | 26 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Re-elected in 1928.Lost re-election. | 22 | 71st | 22 | Elected in 1930 to finish Willis's term. | Dec 1, 1930 – Jan 3, 1939 | Democratic | Robert J. Bulkley | 27 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Re-elected in 1928.Lost re-election. | 22 | 72nd | 22 | Elected in 1930 to finish Willis's term. | Dec 1, 1930 – Jan 3, 1939 | Democratic | Robert J. Bulkley | 27 |
| 16 | Simeon D. Fess | Republican | Mar 4, 1923 – Jan 3, 1935 | Re-elected in 1928.Lost re-election. | 22 | 73rd | 23 | Re-elected in 1932.Lost re-election. | Dec 1, 1930 – Jan 3, 1939 | Democratic | Robert J. Bulkley | 27 |
| 17 | Vic Donahey | Democratic | Jan 3, 1935 – Jan 3, 1941 | Elected in 1934.Retired. | 23 | 74th | 23 | Re-elected in 1932.Lost re-election. | Dec 1, 1930 – Jan 3, 1939 | Democratic | Robert J. Bulkley | 27 |
| 17 | Vic Donahey | Democratic | Jan 3, 1935 – Jan 3, 1941 | Elected in 1934.Retired. | 23 | 75th | 23 | Re-elected in 1932.Lost re-election. | Dec 1, 1930 – Jan 3, 1939 | Democratic | Robert J. Bulkley | 27 |
| 17 | Vic Donahey | Democratic | Jan 3, 1935 – Jan 3, 1941 | Elected in 1934.Retired. | 23 | 76th | 24 | Elected in 1938. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 18 | Harold H. Burton | Republican | Jan 3, 1941 – Sep 30, 1945 | Elected in 1940.Resigned when appointed to the U.S. Supreme Court. | 24 | 77th | 24 | Elected in 1938. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 18 | Harold H. Burton | Republican | Jan 3, 1941 – Sep 30, 1945 | Elected in 1940.Resigned when appointed to the U.S. Supreme Court. | 24 | 78th | 24 | Elected in 1938. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 18 | Harold H. Burton | Republican | Jan 3, 1941 – Sep 30, 1945 | Elected in 1940.Resigned when appointed to the U.S. Supreme Court. | 24 | 79th | 25 | Re-elected in 1944. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| Vacant | Vacant | Vacant | Sep 30, 1945 – Oct 8, 1945 | | 24 | 79th | 25 | Re-elected in 1944. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 19 | James W. Huffman | Democratic | Oct 8, 1945 – Nov 5, 1946 | Appointed to continue Burton's term.Retired when successor elected. | 24 | 79th | 25 | Re-elected in 1944. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 20 | Kingsley Taft | Republican | Nov 5, 1946 – Jan 3, 1947 | Elected in 1946 to finish Burton's term.Retired. | 24 | 79th | 25 | Re-elected in 1944. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Elected in 1946. | 25 | 80th | 25 | Re-elected in 1944. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Elected in 1946. | 25 | 81st | 25 | Re-elected in 1944. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Elected in 1946. | 25 | 82nd | 26 | Re-elected in 1950.Died. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Re-elected in 1952.Lost re-election. | 26 | 83rd | 26 | Re-elected in 1950.Died. | Jan 3, 1939 – Jul 31, 1953 | Republican | Robert A. Taft | 28 |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Re-elected in 1952.Lost re-election. | 26 | 83rd | 26 | | Jul 31, 1953 – Nov 10, 1953 | Vacant | Vacant | Vacant |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Re-elected in 1952.Lost re-election. | 26 | 83rd | 26 | Appointed to continue Taft's term.Lost election to finish Taft's term. | Nov 10, 1953 – Dec 2, 1954 | Democratic | Thomas Burke | 29 |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Re-elected in 1952.Lost re-election. | 26 | 83rd | 26 | | Dec 2, 1954 – Dec 16, 1954 | Vacant | Vacant | Vacant |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Re-elected in 1952.Lost re-election. | 26 | 83rd | 26 | Elected in 1954 to finish Taft's term.Lost re-election. | Dec 16, 1954 – Jan 3, 1957 | Republican | George H. Bender | 30 |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Re-elected in 1952.Lost re-election. | 26 | 84th | 26 | Elected in 1954 to finish Taft's term.Lost re-election. | Dec 16, 1954 – Jan 3, 1957 | Republican | George H. Bender | 30 |
| 21 | John W. Bricker | Republican | Jan 3, 1947 – Jan 3, 1959 | Re-elected in 1952.Lost re-election. | 26 | 85th | 27 | Elected in 1956. | Jan 3, 1957 – Jan 3, 1969 | Democratic | Frank Lausche | 31 |
| 22 | Stephen M. Young | Democratic | Jan 3, 1959 – Jan 3, 1971 | Elected in 1958. | 27 | 86th | 27 | Elected in 1956. | Jan 3, 1957 – Jan 3, 1969 | Democratic | Frank Lausche | 31 |
| 22 | Stephen M. Young | Democratic | Jan 3, 1959 – Jan 3, 1971 | Elected in 1958. | 27 | 87th | 27 | Elected in 1956. | Jan 3, 1957 – Jan 3, 1969 | Democratic | Frank Lausche | 31 |
| 22 | Stephen M. Young | Democratic | Jan 3, 1959 – Jan 3, 1971 | Elected in 1958. | 27 | 88th | 28 | Re-elected in 1962.Lost renomination. | Jan 3, 1957 – Jan 3, 1969 | Democratic | Frank Lausche | 31 |
| 22 | Stephen M. Young | Democratic | Jan 3, 1959 – Jan 3, 1971 | Re-elected in 1964.Retired. | 28 | 89th | 28 | Re-elected in 1962.Lost renomination. | Jan 3, 1957 – Jan 3, 1969 | Democratic | Frank Lausche | 31 |
| 22 | Stephen M. Young | Democratic | Jan 3, 1959 – Jan 3, 1971 | Re-elected in 1964.Retired. | 28 | 90th | 28 | Re-elected in 1962.Lost renomination. | Jan 3, 1957 – Jan 3, 1969 | Democratic | Frank Lausche | 31 |
| 22 | Stephen M. Young | Democratic | Jan 3, 1959 – Jan 3, 1971 | Re-elected in 1964.Retired. | 28 | 91st | 29 | Elected in 1968.Resigned to become U.S. Attorney General. | Jan 3, 1969 – Jan 3, 1974 | Republican | William Saxbe | 32 |
| 23 | Robert Taft Jr. | Republican | Jan 3, 1971 – Dec 28, 1976 | Elected in 1970.Lost re-election and resigned early. | 29 | 92nd | 29 | Elected in 1968.Resigned to become U.S. Attorney General. | Jan 3, 1969 – Jan 3, 1974 | Republican | William Saxbe | 32 |
| 23 | Robert Taft Jr. | Republican | Jan 3, 1971 – Dec 28, 1976 | Elected in 1970.Lost re-election and resigned early. | 29 | 93rd | 29 | Elected in 1968.Resigned to become U.S. Attorney General. | Jan 3, 1969 – Jan 3, 1974 | Republican | William Saxbe | 32 |
| 23 | Robert Taft Jr. | Republican | Jan 3, 1971 – Dec 28, 1976 | Elected in 1970.Lost re-election and resigned early. | 29 | 93rd | 29 | Appointed to finish Saxbe's term.Lost nomination to full term and resigned early. | Jan 4, 1974 – Dec 23, 1974 | Democratic | Howard Metzenbaum | 33 |
| 23 | Robert Taft Jr. | Republican | Jan 3, 1971 – Dec 28, 1976 | Elected in 1970.Lost re-election and resigned early. | 29 | 93rd | 29 | Appointed to finish Saxbe's term, having been elected to the next term. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 23 | Robert Taft Jr. | Republican | Jan 3, 1971 – Dec 28, 1976 | Elected in 1970.Lost re-election and resigned early. | 29 | 94th | 30 | Elected in 1974. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Appointed to finish Taft's term, having been elected to the next term. | 29 | 94th | 30 | Elected in 1974. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Elected in 1976. | 30 | 95th | 30 | Elected in 1974. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Elected in 1976. | 30 | 96th | 30 | Elected in 1974. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Elected in 1976. | 30 | 97th | 31 | Re-elected in 1980. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Re-elected in 1982. | 31 | 98th | 31 | Re-elected in 1980. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Re-elected in 1982. | 31 | 99th | 31 | Re-elected in 1980. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Re-elected in 1982. | 31 | 100th | 32 | Re-elected in 1986. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Re-elected in 1988.Retired. | 32 | 101st | 32 | Re-elected in 1986. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Re-elected in 1988.Retired. | 32 | 102nd | 32 | Re-elected in 1986. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 24 | Howard Metzenbaum | Democratic | Dec 29, 1976 – Jan 3, 1995 | Re-elected in 1988.Retired. | 32 | 103rd | 33 | Re-elected in 1992.Retired. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 25 | Mike DeWine | Republican | Jan 3, 1995 – Jan 3, 2007 | Elected in 1994. | 33 | 104th | 33 | Re-elected in 1992.Retired. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 25 | Mike DeWine | Republican | Jan 3, 1995 – Jan 3, 2007 | Elected in 1994. | 33 | 105th | 33 | Re-elected in 1992.Retired. | Dec 24, 1974 – Jan 3, 1999 | Democratic | John Glenn | 34 |
| 25 | Mike DeWine | Republican | Jan 3, 1995 – Jan 3, 2007 | Elected in 1994. | 33 | 106th | 34 | Elected in 1998. | Jan 3, 1999 – Jan 3, 2011 | Republican | George Voinovich | 35 |
| 25 | Mike DeWine | Republican | Jan 3, 1995 – Jan 3, 2007 | Re-elected in 2000.Lost re-election. | 34 | 107th | 34 | Elected in 1998. | Jan 3, 1999 – Jan 3, 2011 | Republican | George Voinovich | 35 |
| 25 | Mike DeWine | Republican | Jan 3, 1995 – Jan 3, 2007 | Re-elected in 2000.Lost re-election. | 34 | 108th | 34 | Elected in 1998. | Jan 3, 1999 – Jan 3, 2011 | Republican | George Voinovich | 35 |
| 25 | Mike DeWine | Republican | Jan 3, 1995 – Jan 3, 2007 | Re-elected in 2000.Lost re-election. | 34 | 109th | 35 | Re-elected in 2004.Retired. | Jan 3, 1999 – Jan 3, 2011 | Republican | George Voinovich | 35 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Elected in 2006. | 35 | 110th | 35 | Re-elected in 2004.Retired. | Jan 3, 1999 – Jan 3, 2011 | Republican | George Voinovich | 35 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Elected in 2006. | 35 | 111th | 35 | Re-elected in 2004.Retired. | Jan 3, 1999 – Jan 3, 2011 | Republican | George Voinovich | 35 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Elected in 2006. | 35 | 112th | 36 | Elected in 2010. | Jan 3, 2011 – Jan 3, 2023 | Republican | Rob Portman | 36 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Re-elected in 2012. | 36 | 113th | 36 | Elected in 2010. | Jan 3, 2011 – Jan 3, 2023 | Republican | Rob Portman | 36 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Re-elected in 2012. | 36 | 114th | 36 | Elected in 2010. | Jan 3, 2011 – Jan 3, 2023 | Republican | Rob Portman | 36 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Re-elected in 2012. | 36 | 115th | 37 | Re-elected in 2016.Retired. | Jan 3, 2011 – Jan 3, 2023 | Republican | Rob Portman | 36 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Re-elected in 2018.Lost re-election. | 37 | 116th | 37 | Re-elected in 2016.Retired. | Jan 3, 2011 – Jan 3, 2023 | Republican | Rob Portman | 36 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Re-elected in 2018.Lost re-election. | 37 | 117th | 37 | Re-elected in 2016.Retired. | Jan 3, 2011 – Jan 3, 2023 | Republican | Rob Portman | 36 |
| 26 | Sherrod Brown | Democratic | Jan 3, 2007 – Jan 3, 2025 | Re-elected in 2018.Lost re-election. | 37 | 118th | 38 | Elected in 2022.Resigned to become Vice President of the United States. | Jan 3, 2023 – Jan 10, 2025 | Republican | JD Vance | 37 |
| 27 | Bernie Moreno | Republican | Jan 3, 2025 – present | Elected in 2024. | 38 | 119th | 38 | Elected in 2022.Resigned to become Vice President of the United States. | Jan 3, 2023 – Jan 10, 2025 | Republican | JD Vance | 37 |
| 27 | Bernie Moreno | Republican | Jan 3, 2025 – present | Elected in 2024. | 38 | 119th | 38 | | Jan 10, 2025 – Jan 18, 2025 | Vacant | Vacant | Vacant |
| 27 | Bernie Moreno | Republican | Jan 3, 2025 – present | Elected in 2024. | 38 | 119th | 38 | Appointed to continue Vance's term. | Jan 18, 2025 – present | Republican | Jon Husted | 38 |
| To be determined in the 2026 special election. |||||
| 27 | Bernie Moreno | Republican | Jan 3, 2025 – present | Elected in 2024. | 38 | 120th | 38 | To be determined in the 2026 special election. | To be determined in the 2026 special election. | To be determined in the 2026 special election. | To be determined in the 2026 special election. | To be determined in the 2026 special election. |
| 27 | Bernie Moreno | Republican | Jan 3, 2025 – present | Elected in 2024. | 38 | 121st | 39 | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. |
| To be determined in the 2030 election. | To be determined in the 2030 election. | To be determined in the 2030 election. | To be determined in the 2030 election. | To be determined in the 2030 election. | 39 | 122nd | 39 | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. |
| # | Senator | Party | Years in office | Electoral history | T | C | T | Electoral history | Years in office | Party | Senator | # |
| Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | C | Class 3 | Class 3 | Class 3 | Class 3 | Class 3 | Class 3 |