# List of United States senators from Kentucky

This is a list of United States senators from Kentucky. The state's senators belong to class 2 and class 3. Kentucky is currently represented in the U.S. Senate by Republicans Mitch McConnell (serving since 1985) and Rand Paul (serving since 2011). Currently, on his seventh term in office, McConnell is Kentucky's longest-serving senator.

## List of senators

| Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026. | Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026. | Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026. | Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026. | Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026. | Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026. | 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 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 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 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 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 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 2028. |
| # | Senator | Party | Dates in office | Electoral history | T | C | T | Electoral history | Dates in office | Party | Senator | # |
| Vacant | Vacant | Vacant | June 1, 1792 – June 18, 1792 | Kentucky elected its senators a couple of weeks after statehood. | 1 | 2nd | 1 | Kentucky elected its senators a couple of weeks after statehood. | June 1, 1792 – June 18, 1792 | Vacant | Vacant | Vacant |
| 1 | John Brown | Anti- Admin. | June 18, 1792 – March 3, 1805 | Elected in 1792. | 1 | 2nd | 1 | Elected in 1792. | June 18, 1792 – March 3, 1795 | Anti- Admin. | John Edwards | 1 |
| 1 | John Brown | Anti- Admin. | June 18, 1792 – March 3, 1805 | Re-elected in 1792. | 2 | 3rd | 1 | Elected in 1792. | June 18, 1792 – March 3, 1795 | Anti- Admin. | John Edwards | 1 |
| 1 | John Brown | Democratic- Republican | June 18, 1792 – March 3, 1805 | Re-elected in 1792. | 2 | 4th | 2 | Elected in 1794.Lost re-election. | March 4, 1795 – March 3, 1801 | Federalist | Humphrey Marshall | 2 |
| 1 | John Brown | Democratic- Republican | June 18, 1792 – March 3, 1805 | Re-elected in 1792. | 2 | 5th | 2 | Elected in 1794.Lost re-election. | March 4, 1795 – March 3, 1801 | Federalist | Humphrey Marshall | 2 |
| 1 | John Brown | Democratic- Republican | June 18, 1792 – March 3, 1805 | Re-elected in 1798.Lost re-election. | 3 | 6th | 2 | Elected in 1794.Lost re-election. | March 4, 1795 – March 3, 1801 | Federalist | Humphrey Marshall | 2 |
| 1 | John Brown | Democratic- Republican | June 18, 1792 – March 3, 1805 | Re-elected in 1798.Lost re-election. | 3 | 7th | 3 | Elected in 1800.Resigned to become U.S. Attorney General. | March 4, 1801 – August 7, 1805 | Democratic- Republican | John Breckinridge | 3 |
| 1 | John Brown | Democratic- Republican | June 18, 1792 – March 3, 1805 | Re-elected in 1798.Lost re-election. | 3 | 8th | 3 | Elected in 1800.Resigned to become U.S. Attorney General. | March 4, 1801 – August 7, 1805 | Democratic- Republican | John Breckinridge | 3 |
| 2 | Buckner Thruston | Democratic- Republican | March 4, 1805 – December 18, 1809 | Elected in 1804.Resigned to become judge of the U.S. Circuit Court. | 4 | 9th | 3 | Elected in 1800.Resigned to become U.S. Attorney General. | March 4, 1801 – August 7, 1805 | Democratic- Republican | John Breckinridge | 3 |
| 2 | Buckner Thruston | Democratic- Republican | March 4, 1805 – December 18, 1809 | Elected in 1804.Resigned to become judge of the U.S. Circuit Court. | 4 | 9th | 3 | | August 7, 1805 – November 8, 1805 | Vacant | Vacant | Vacant |
| 2 | Buckner Thruston | Democratic- Republican | March 4, 1805 – December 18, 1809 | Elected in 1804.Resigned to become judge of the U.S. Circuit Court. | 4 | 9th | 3 | Elected to finish Breckinridge's term.Lost re-election and resigned because of participation in the Burr conspiracy. | November 8, 1805 – November 18, 1806 | Democratic- Republican | John Adair | 4 |
| 2 | Buckner Thruston | Democratic- Republican | March 4, 1805 – December 18, 1809 | Elected in 1804.Resigned to become judge of the U.S. Circuit Court. | 4 | 9th | 3 | Elected to finish Adair's term, despite not meeting the constitutional age minimum.Retired. | November 19, 1806 – March 3, 1807 | Democratic- Republican | Henry Clay | 5 |
| 2 | Buckner Thruston | Democratic- Republican | March 4, 1805 – December 18, 1809 | Elected in 1804.Resigned to become judge of the U.S. Circuit Court. | 4 | 10th | 4 | Elected in 1806.Retired. | March 4, 1807 – March 3, 1813 | Democratic- Republican | John Pope | 6 |
| 2 | Buckner Thruston | Democratic- Republican | March 4, 1805 – December 18, 1809 | Elected in 1804.Resigned to become judge of the U.S. Circuit Court. | 4 | 11th | 4 | Elected in 1806.Retired. | March 4, 1807 – March 3, 1813 | Democratic- Republican | John Pope | 6 |
| Vacant | Vacant | Vacant | December 18, 1809 – January 10, 1810 | | 4 | 11th | 4 | Elected in 1806.Retired. | March 4, 1807 – March 3, 1813 | Democratic- Republican | John Pope | 6 |
| 3 | Henry Clay | Democratic- Republican | January 10, 1810 – March 3, 1811 | Appointed to finish Thruston's term.Retired. | 4 | 11th | 4 | Elected in 1806.Retired. | March 4, 1807 – March 3, 1813 | Democratic- Republican | John Pope | 6 |
| 4 | George Bibb | Democratic- Republican | March 4, 1811 – August 23, 1814 | Elected in 1811.Resigned to return to private practice. | 5 | 12th | 4 | Elected in 1806.Retired. | March 4, 1807 – March 3, 1813 | Democratic- Republican | John Pope | 6 |
| 4 | George Bibb | Democratic- Republican | March 4, 1811 – August 23, 1814 | Elected in 1811.Resigned to return to private practice. | 5 | 13th | 5 | Elected in 1813.Resigned. | March 4, 1813 – December 24, 1814 | Democratic-Republican | Jesse Bledsoe | 7 |
| Vacant | Vacant | Vacant | August 23, 1814 – August 30, 1814 | | 5 | 13th | 5 | Elected in 1813.Resigned. | March 4, 1813 – December 24, 1814 | Democratic-Republican | Jesse Bledsoe | 7 |
| 5 | George Walker | Democratic- Republican | August 30, 1814 – February 2, 1815 | Appointed to continue Bibb's term.Successor qualified. | 5 | 13th | 5 | Elected in 1813.Resigned. | March 4, 1813 – December 24, 1814 | Democratic-Republican | Jesse Bledsoe | 7 |
| 6 | William Barry | Democratic- Republican | February 2, 1815 – May 1, 1816 | Elected to finish Bibb's term.Resigned to become judge of the Kentucky Circuit Court. | 5 | 13th | 5 | Elected in 1813.Resigned. | March 4, 1813 – December 24, 1814 | Democratic-Republican | Jesse Bledsoe | 7 |
| 6 | William Barry | Democratic- Republican | February 2, 1815 – May 1, 1816 | Elected to finish Bibb's term.Resigned to become judge of the Kentucky Circuit Court. | 5 | 13th | 5 | | December 24, 1814 – February 2, 1815 | Vacant | Vacant | Vacant |
| 6 | William Barry | Democratic- Republican | February 2, 1815 – May 1, 1816 | Elected to finish Bibb's term.Resigned to become judge of the Kentucky Circuit Court. | 5 | 13th | 5 | Elected in 1815 to finish Bledsoe's term.Retired or lost re-election. | February 2, 1815 – March 3, 1819 | Democratic-Republican | Isham Talbot | 8 |
| 6 | William Barry | Democratic- Republican | February 2, 1815 – May 1, 1816 | Elected to finish Bibb's term.Resigned to become judge of the Kentucky Circuit Court. | 5 | 14th | 5 | Elected in 1815 to finish Bledsoe's term.Retired or lost re-election. | February 2, 1815 – March 3, 1819 | Democratic-Republican | Isham Talbot | 8 |
| Vacant | Vacant | Vacant | May 1, 1816 – November 3, 1816 | | 5 | 14th | 5 | Elected in 1815 to finish Bledsoe's term.Retired or lost re-election. | February 2, 1815 – March 3, 1819 | Democratic-Republican | Isham Talbot | 8 |
| 7 | Martin Hardin | Democratic-Republican | November 3, 1816 – March 3, 1817 | Appointed to continue Bibb's term.Elected in 1816 to finish Bibb's termRetired. | 5 | 14th | 5 | Elected in 1815 to finish Bledsoe's term.Retired or lost re-election. | February 2, 1815 – March 3, 1819 | Democratic-Republican | Isham Talbot | 8 |
| 8 | John J. Crittenden | Democratic- Republican | March 4, 1817 – March 3, 1819 | Elected in 1816.Resigned to return to private practice. | 6 | 15th | 5 | Elected in 1815 to finish Bledsoe's term.Retired or lost re-election. | February 2, 1815 – March 3, 1819 | Democratic-Republican | Isham Talbot | 8 |
| Vacant | Vacant | Vacant | March 3, 1819 – December 10, 1819 | | 6 | 16th | 6 | Elected in 1818.Resigned to run for governor. | March 4, 1819 – May 28, 1820 | Democratic-Republican | William Logan | 9 |
| 9 | Richard Mentor Johnson | Democratic- Republican | December 10, 1819 – March 3, 1829 | Elected to finish Crittenden's term. | 6 | 16th | 6 | Elected in 1818.Resigned to run for governor. | March 4, 1819 – May 28, 1820 | Democratic-Republican | William Logan | 9 |
| 9 | Richard Mentor Johnson | Democratic- Republican | December 10, 1819 – March 3, 1829 | Elected to finish Crittenden's term. | 6 | 16th | 6 | | May 28, 1820 – October 19, 1820 | Vacant | Vacant | Vacant |
| 9 | Richard Mentor Johnson | Democratic- Republican | December 10, 1819 – March 3, 1829 | Elected to finish Crittenden's term. | 6 | 16th | 6 | Elected to finish Logan's term.Retired or lost re-election. | October 19, 1820– March 3, 1825 | Democratic-Republican | Isham Talbot | 10 |
| 9 | Richard Mentor Johnson | Democratic- Republican | December 10, 1819 – March 3, 1829 | Elected to finish Crittenden's term. | 6 | 17th | 6 | Elected to finish Logan's term.Retired or lost re-election. | October 19, 1820– March 3, 1825 | Democratic-Republican | Isham Talbot | 10 |
| 9 | Richard Mentor Johnson | Democratic- Republican | December 10, 1819 – March 3, 1829 | Re-elected in 1823.Lost re-election. | 7 | 18th | 6 | Elected to finish Logan's term.Retired or lost re-election. | October 19, 1820– March 3, 1825 | Democratic-Republican | Isham Talbot | 10 |
| 9 | Richard Mentor Johnson | Jacksonian | December 10, 1819 – March 3, 1829 | Re-elected in 1823.Lost re-election. | 7 | 19th | 7 | Election year unknown.Retired or lost re-election. | March 4, 1825 – March 3, 1831 | Jacksonian | John Rowan | 11 |
| 9 | Richard Mentor Johnson | Jacksonian | December 10, 1819 – March 3, 1829 | Re-elected in 1823.Lost re-election. | 7 | 20th | 7 | Election year unknown.Retired or lost re-election. | March 4, 1825 – March 3, 1831 | Jacksonian | John Rowan | 11 |
| 10 | George Bibb | Jacksonian | March 4, 1829 – March 3, 1835 | Elected in 1829.Retired or lost re-election. | 8 | 21st | 7 | Election year unknown.Retired or lost re-election. | March 4, 1825 – March 3, 1831 | Jacksonian | John Rowan | 11 |
| 10 | George Bibb | Jacksonian | March 4, 1829 – March 3, 1835 | Elected in 1829.Retired or lost re-election. | 8 | 22nd | 8 | | March 4, 1831 – November 10, 1831 | Vacant | Vacant | Vacant |
| 10 | George Bibb | Jacksonian | March 4, 1829 – March 3, 1835 | Elected in 1829.Retired or lost re-election. | 8 | 22nd | 8 | Elected late in 1831. | November 10, 1831 – March 31, 1842 | National Republican | Henry Clay | 12 |
| 10 | George Bibb | Jacksonian | March 4, 1829 – March 3, 1835 | Elected in 1829.Retired or lost re-election. | 8 | 23rd | 8 | Elected late in 1831. | November 10, 1831 – March 31, 1842 | National Republican | Henry Clay | 12 |
| 11 | John J. Crittenden | National Republican | March 4, 1835 – March 3, 1841 | Elected in 1835.Retired. | 9 | 24th | 8 | Elected late in 1831. | November 10, 1831 – March 31, 1842 | National Republican | Henry Clay | 12 |
| 11 | John J. Crittenden | Whig | March 4, 1835 – March 3, 1841 | Elected in 1835.Retired. | 9 | 25th | 9 | Re-elected in 1836.Resigned. | November 10, 1831 – March 31, 1842 | Whig | Henry Clay | 12 |
| 11 | John J. Crittenden | Whig | March 4, 1835 – March 3, 1841 | Elected in 1835.Retired. | 9 | 26th | 9 | Re-elected in 1836.Resigned. | November 10, 1831 – March 31, 1842 | Whig | Henry Clay | 12 |
| 12 | James T. Morehead | Whig | March 4, 1841 – March 3, 1847 | Elected in 1841.Retired or lost re-election. | 10 | 27th | 9 | Re-elected in 1836.Resigned. | November 10, 1831 – March 31, 1842 | Whig | Henry Clay | 12 |
| 12 | James T. Morehead | Whig | March 4, 1841 – March 3, 1847 | Elected in 1841.Retired or lost re-election. | 10 | 27th | 9 | Elected to finish Clay's term. | March 31, 1842 – June 12, 1848 | Whig | John J. Crittenden | 13 |
| 12 | James T. Morehead | Whig | March 4, 1841 – March 3, 1847 | Elected in 1841.Retired or lost re-election. | 10 | 28th | 10 | Re-elected in 1843.Resigned to become Governor of Kentucky. | March 31, 1842 – June 12, 1848 | Whig | John J. Crittenden | 13 |
| 12 | James T. Morehead | Whig | March 4, 1841 – March 3, 1847 | Elected in 1841.Retired or lost re-election. | 10 | 29th | 10 | Re-elected in 1843.Resigned to become Governor of Kentucky. | March 31, 1842 – June 12, 1848 | Whig | John J. Crittenden | 13 |
| 13 | Joseph R. Underwood | Whig | March 4, 1847 – March 3, 1853 | Election year unknown.Retired. | 11 | 30th | 10 | Re-elected in 1843.Resigned to become Governor of Kentucky. | March 31, 1842 – June 12, 1848 | Whig | John J. Crittenden | 13 |
| 13 | Joseph R. Underwood | Whig | March 4, 1847 – March 3, 1853 | Election year unknown.Retired. | 11 | 30th | 10 | | June 12, 1848 – June 23, 1848 | Vacant | Vacant | Vacant |
| 13 | Joseph R. Underwood | Whig | March 4, 1847 – March 3, 1853 | Election year unknown.Retired. | 11 | 30th | 10 | Appointed to continue Crittenden's term.Elected in 1849 to finish Crittenden's term.Retired or lost re-election. | June 23, 1848 – March 3, 1849 | Whig | Thomas Metcalfe | 14 |
| 13 | Joseph R. Underwood | Whig | March 4, 1847 – March 3, 1853 | Election year unknown.Retired. | 11 | 31st | 11 | Elected in 1849.Resigned effective September 6, 1852, but died June 24, 1852. | March 4, 1849 – June 24, 1852 | Whig | Henry Clay | 15 |
| 13 | Joseph R. Underwood | Whig | March 4, 1847 – March 3, 1853 | Election year unknown.Retired. | 11 | 32nd | 11 | Elected in 1849.Resigned effective September 6, 1852, but died June 24, 1852. | March 4, 1849 – June 24, 1852 | Whig | Henry Clay | 15 |
| 13 | Joseph R. Underwood | Whig | March 4, 1847 – March 3, 1853 | Election year unknown.Retired. | 11 | 32nd | 11 | | June 24, 1852 – July 6, 1852 | Vacant | Vacant | Vacant |
| 13 | Joseph R. Underwood | Whig | March 4, 1847 – March 3, 1853 | Election year unknown.Retired. | 11 | 32nd | 11 | Appointed to continue Clay's term.Lost election to finish Clay's term. | July 6, 1852 – August 31, 1852 | Democratic | David Meriwether | 16 |
| 13 | Joseph R. Underwood | Whig | March 4, 1847 – March 3, 1853 | Election year unknown.Retired. | 11 | 32nd | 11 | Elected in 1851 to finish Clay's term, in anticipation of Clay's resignation.Retired. | September 1, 1852 – March 3, 1855 | Whig | Archibald Dixon | 17 |
| 14 | John B. Thompson | Know Nothing | March 4, 1853 – March 3, 1859 | Elected in 1851, far in advance of the term.Retired or lost re-election. | 12 | 33rd | 11 | Elected in 1851 to finish Clay's term, in anticipation of Clay's resignation.Retired. | September 1, 1852 – March 3, 1855 | Whig | Archibald Dixon | 17 |
| 14 | John B. Thompson | Know Nothing | March 4, 1853 – March 3, 1859 | Elected in 1851, far in advance of the term.Retired or lost re-election. | 12 | 34th | 12 | Elected in 1854.Retired. | March 4, 1855– March 3, 1861 | Whig | John J. Crittenden | 18 |
| 14 | John B. Thompson | Know Nothing | March 4, 1853 – March 3, 1859 | Elected in 1851, far in advance of the term.Retired or lost re-election. | 12 | 35th | 12 | Elected in 1854.Retired. | March 4, 1855– March 3, 1861 | Know Nothing | John J. Crittenden | 18 |
| 15 | Lazarus W. Powell | Democratic | March 4, 1859 – March 3, 1865 | Elected in 1858.Retired to run for U.S. President. | 13 | 36th | 12 | Elected in 1854.Retired. | March 4, 1855– March 3, 1861 | Know Nothing | John J. Crittenden | 18 |
| 15 | Lazarus W. Powell | Democratic | March 4, 1859 – March 3, 1865 | Elected in 1858.Retired to run for U.S. President. | 13 | 37th | 13 | Elected in 1859, far in advance of the term.Expelled for supporting the Confederacy. | March 4, 1861 – December 4, 1861 | Democratic | John C. Breckinridge | 19 |
| 15 | Lazarus W. Powell | Democratic | March 4, 1859 – March 3, 1865 | Elected in 1858.Retired to run for U.S. President. | 13 | 37th | 13 | | December 4, 1861 – December 10, 1861 | Vacant | Vacant | Vacant |
| 15 | Lazarus W. Powell | Democratic | March 4, 1859 – March 3, 1865 | Elected in 1858.Retired to run for U.S. President. | 13 | 37th | 13 | Elected to finish Breckinridge's term. | December 10, 1861 – September 22, 1872 | Union Democratic | Garrett Davis | 20 |
| 15 | Lazarus W. Powell | Democratic | March 4, 1859 – March 3, 1865 | Elected in 1858.Retired to run for U.S. President. | 13 | 38th | 13 | Elected to finish Breckinridge's term. | December 10, 1861 – September 22, 1872 | Union Democratic | Garrett Davis | 20 |
| 16 | James Guthrie | Democratic | March 4, 1865 – February 7, 1868 | Elected in 1865.Resigned due to ill health. | 14 | 39th | 13 | Elected to finish Breckinridge's term. | December 10, 1861 – September 22, 1872 | Union Democratic | Garrett Davis | 20 |
| 16 | James Guthrie | Democratic | March 4, 1865 – February 7, 1868 | Elected in 1865.Resigned due to ill health. | 14 | 40th | 14 | Re-elected in 1867.Died. | December 10, 1861 – September 22, 1872 | Democratic | Garrett Davis | 20 |
| Vacant | Vacant | Vacant | February 7, 1868 – February 19, 1868 | | 14 | 40th | 14 | Re-elected in 1867.Died. | December 10, 1861 – September 22, 1872 | Democratic | Garrett Davis | 20 |
| 17 | Thomas C. McCreery | Democratic | February 19, 1868 – March 3, 1871 | Elected to finish Guthrie's term.Lost re-election. | 14 | 40th | 14 | Re-elected in 1867.Died. | December 10, 1861 – September 22, 1872 | Democratic | Garrett Davis | 20 |
| 17 | Thomas C. McCreery | Democratic | February 19, 1868 – March 3, 1871 | Elected to finish Guthrie's term.Lost re-election. | 14 | 41st | 14 | Re-elected in 1867.Died. | December 10, 1861 – September 22, 1872 | Democratic | Garrett Davis | 20 |
| 18 | John W. Stevenson | Democratic | March 4, 1871 – March 3, 1877 | Elected in 1871.Retired. | 15 | 42nd | 14 | Re-elected in 1867.Died. | December 10, 1861 – September 22, 1872 | Democratic | Garrett Davis | 20 |
| 18 | John W. Stevenson | Democratic | March 4, 1871 – March 3, 1877 | Elected in 1871.Retired. | 15 | 42nd | 14 | | September 22, 1872 – September 27, 1872 | Vacant | Vacant | Vacant |
| 18 | John W. Stevenson | Democratic | March 4, 1871 – March 3, 1877 | Elected in 1871.Retired. | 15 | 42nd | 14 | Appointed to continue Davis's term.Elected in 1873 to finish Davis's term.Retired or lost re-election. | September 27, 1872 – March 3, 1873 | Democratic | Willis B. Machen | 21 |
| 18 | John W. Stevenson | Democratic | March 4, 1871 – March 3, 1877 | Elected in 1871.Retired. | 15 | 43rd | 15 | Elected in 1872.Retired. | March 4, 1873 – March 3, 1879 | Democratic | Thomas C. McCreery | 22 |
| 18 | John W. Stevenson | Democratic | March 4, 1871 – March 3, 1877 | Elected in 1871.Retired. | 15 | 44th | 15 | Elected in 1872.Retired. | March 4, 1873 – March 3, 1879 | Democratic | Thomas C. McCreery | 22 |
| 19 | James B. Beck | Democratic | March 4, 1877 – May 3, 1890 | Elected in 1876. | 16 | 45th | 15 | Elected in 1872.Retired. | March 4, 1873 – March 3, 1879 | Democratic | Thomas C. McCreery | 22 |
| 19 | James B. Beck | Democratic | March 4, 1877 – May 3, 1890 | Elected in 1876. | 16 | 46th | 16 | Elected in 1879.Lost re-election. | March 4, 1879 – March 3, 1885 | Democratic | John Stuart Williams | 23 |
| 19 | James B. Beck | Democratic | March 4, 1877 – May 3, 1890 | Elected in 1876. | 16 | 47th | 16 | Elected in 1879.Lost re-election. | March 4, 1879 – March 3, 1885 | Democratic | John Stuart Williams | 23 |
| 19 | James B. Beck | Democratic | March 4, 1877 – May 3, 1890 | Re-elected in 1882. | 17 | 48th | 16 | Elected in 1879.Lost re-election. | March 4, 1879 – March 3, 1885 | Democratic | John Stuart Williams | 23 |
| 19 | James B. Beck | Democratic | March 4, 1877 – May 3, 1890 | Re-elected in 1882. | 17 | 49th | 17 | Elected in 1884. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| 19 | James B. Beck | Democratic | March 4, 1877 – May 3, 1890 | Re-elected in 1882. | 17 | 50th | 17 | Elected in 1884. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| 19 | James B. Beck | Democratic | March 4, 1877 – May 3, 1890 | Re-elected in 1888.Died. | 18 | 51st | 17 | Elected in 1884. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| Vacant | Vacant | Vacant | May 3, 1890 – May 26, 1890 | | 18 | 51st | 17 | Elected in 1884. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| 20 | John Carlisle | Democratic | May 26, 1890 – February 4, 1893 | Elected to finish Beck's term.Resigned. | 18 | 51st | 17 | Elected in 1884. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| 20 | John Carlisle | Democratic | May 26, 1890 – February 4, 1893 | Elected to finish Beck's term.Resigned. | 18 | 52nd | 18 | Re-elected in 1890.Lost re-election. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| Vacant | Vacant | Vacant | February 4, 1893 – February 15, 1893 | | 18 | 52nd | 18 | Re-elected in 1890.Lost re-election. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| 21 | William Lindsay | Democratic | February 15, 1893 – March 3, 1901 | Elected to finish Carlisle's term. | 18 | 52nd | 18 | Re-elected in 1890.Lost re-election. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| 21 | William Lindsay | Democratic | February 15, 1893 – March 3, 1901 | Elected to finish Carlisle's term. | 18 | 53rd | 18 | Re-elected in 1890.Lost re-election. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| 21 | William Lindsay | Democratic | February 15, 1893 – March 3, 1901 | Re-elected in 1894.Retired. | 19 | 54th | 18 | Re-elected in 1890.Lost re-election. | March 4, 1885 – March 3, 1897 | Democratic | J. C. S. Blackburn | 24 |
| 21 | William Lindsay | Democratic | February 15, 1893 – March 3, 1901 | Re-elected in 1894.Retired. | 19 | 55th | 19 | Legislature failed to elect. | March 4, 1897 – May 5, 1897 | Vacant | Vacant | Vacant |
| 21 | William Lindsay | Democratic | February 15, 1893 – March 3, 1901 | Re-elected in 1894.Retired. | 19 | 55th | 19 | Elected in 1897 to finish vacant term.Retired. | May 5, 1897 – March 3, 1903 | Republican | William J. Deboe | 25 |
| 21 | William Lindsay | Democratic | February 15, 1893 – March 3, 1901 | Re-elected in 1894.Retired. | 19 | 56th | 19 | Elected in 1897 to finish vacant term.Retired. | May 5, 1897 – March 3, 1903 | Republican | William J. Deboe | 25 |
| 22 | J. C. S. Blackburn | Democratic | March 4, 1901 – March 3, 1907 | Elected in 1900.Lost re-election. | 20 | 57th | 19 | Elected in 1897 to finish vacant term.Retired. | May 5, 1897 – March 3, 1903 | Republican | William J. Deboe | 25 |
| 22 | J. C. S. Blackburn | Democratic | March 4, 1901 – March 3, 1907 | Elected in 1900.Lost re-election. | 20 | 58th | 20 | Elected in 1902.Lost renomination. | March 4, 1903 – March 3, 1909 | Democratic | James B. McCreary | 26 |
| 22 | J. C. S. Blackburn | Democratic | March 4, 1901 – March 3, 1907 | Elected in 1900.Lost re-election. | 20 | 59th | 20 | Elected in 1902.Lost renomination. | March 4, 1903 – March 3, 1909 | Democratic | James B. McCreary | 26 |
| 23 | Thomas H. Paynter | Democratic | March 4, 1907 – March 3, 1913 | Elected in 1906.Retired. | 21 | 60th | 20 | Elected in 1902.Lost renomination. | March 4, 1903 – March 3, 1909 | Democratic | James B. McCreary | 26 |
| 23 | Thomas H. Paynter | Democratic | March 4, 1907 – March 3, 1913 | Elected in 1906.Retired. | 21 | 61st | 21 | Elected in 1908.Died. | March 4, 1909 – May 23, 1914 | Republican | William O. Bradley | 27 |
| 23 | Thomas H. Paynter | Democratic | March 4, 1907 – March 3, 1913 | Elected in 1906.Retired. | 21 | 62nd | 21 | Elected in 1908.Died. | March 4, 1909 – May 23, 1914 | Republican | William O. Bradley | 27 |
| 24 | Ollie Murray James | Democratic | March 4, 1913 – August 28, 1918 | Elected in 1912.Died. | 22 | 63rd | 21 | Elected in 1908.Died. | March 4, 1909 – May 23, 1914 | Republican | William O. Bradley | 27 |
| 24 | Ollie Murray James | Democratic | March 4, 1913 – August 28, 1918 | Elected in 1912.Died. | 22 | 63rd | 21 | | May 23, 1914 – June 16, 1914 | Vacant | Vacant | Vacant |
| 24 | Ollie Murray James | Democratic | March 4, 1913 – August 28, 1918 | Elected in 1912.Died. | 22 | 63rd | 21 | Appointed to continue Bradley's term.Elected in 1914 to finish Bradley's term.Retired. | June 16, 1914 – March 3, 1915 | Democratic | Johnson N. Camden Jr. | 28 |
| 24 | Ollie Murray James | Democratic | March 4, 1913 – August 28, 1918 | Elected in 1912.Died. | 22 | 64th | 22 | Elected in 1914.Lost re-election. | March 4, 1915 – March 3, 1921 | Democratic | J. C. W. Beckham | 29 |
| 24 | Ollie Murray James | Democratic | March 4, 1913 – August 28, 1918 | Elected in 1912.Died. | 22 | 65th | 22 | Elected in 1914.Lost re-election. | March 4, 1915 – March 3, 1921 | Democratic | J. C. W. Beckham | 29 |
| Vacant | Vacant | Vacant | August 28, 1918 – September 7, 1918 | | 22 | 65th | 22 | Elected in 1914.Lost re-election. | March 4, 1915 – March 3, 1921 | Democratic | J. C. W. Beckham | 29 |
| 25 | George B. Martin | Democratic | September 7, 1918 – March 3, 1919 | Appointed to finish James's term.Retired. | 22 | 65th | 22 | Elected in 1914.Lost re-election. | March 4, 1915 – March 3, 1921 | Democratic | J. C. W. Beckham | 29 |
| 26 | A. O. Stanley | Democratic | March 4, 1919 – March 3, 1925 | Elected in 1918.Didn't take seat until May 19, 1919, in order to remain Governor of Kentucky.Lost re-election. | 23 | 66th | 22 | Elected in 1914.Lost re-election. | March 4, 1915 – March 3, 1921 | Democratic | J. C. W. Beckham | 29 |
| 26 | A. O. Stanley | Democratic | March 4, 1919 – March 3, 1925 | Elected in 1918.Didn't take seat until May 19, 1919, in order to remain Governor of Kentucky.Lost re-election. | 23 | 67th | 23 | Elected in 1920.Lost re-election. | March 4, 1921 – March 3, 1927 | Republican | Richard P. Ernst | 30 |
| 26 | A. O. Stanley | Democratic | March 4, 1919 – March 3, 1925 | Elected in 1918.Didn't take seat until May 19, 1919, in order to remain Governor of Kentucky.Lost re-election. | 23 | 68th | 23 | Elected in 1920.Lost re-election. | March 4, 1921 – March 3, 1927 | Republican | Richard P. Ernst | 30 |
| 27 | Fred Sackett | Republican | March 4, 1925 – January 9, 1930 | Elected in 1924.Resigned to become U.S. Ambassador to Germany. | 24 | 69th | 23 | Elected in 1920.Lost re-election. | March 4, 1921 – March 3, 1927 | Republican | Richard P. Ernst | 30 |
| 27 | Fred Sackett | Republican | March 4, 1925 – January 9, 1930 | Elected in 1924.Resigned to become U.S. Ambassador to Germany. | 24 | 70th | 24 | Elected in 1926. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 27 | Fred Sackett | Republican | March 4, 1925 – January 9, 1930 | Elected in 1924.Resigned to become U.S. Ambassador to Germany. | 24 | 71st | 24 | Elected in 1926. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| Vacant | Vacant | Vacant | January 9, 1930 – January 11, 1930 | | 24 | 71st | 24 | Elected in 1926. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 28 | John Robsion | Republican | January 11, 1930 – November 30, 1930 | Appointed to continue Sackett's term.Lost elections to finish Sackett's term and to next term. | 24 | 71st | 24 | Elected in 1926. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 29 | Ben M. Williamson | Democratic | December 1, 1930 – March 3, 1931 | Elected in 1930 to finish Sackett's term.Retired. | 24 | 71st | 24 | Elected in 1926. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 30 | M. M. Logan | Democratic | March 4, 1931 – October 3, 1939 | Elected in 1930. | 25 | 72nd | 24 | Elected in 1926. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 30 | M. M. Logan | Democratic | March 4, 1931 – October 3, 1939 | Elected in 1930. | 25 | 73rd | 25 | Re-elected in 1932. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 30 | M. M. Logan | Democratic | March 4, 1931 – October 3, 1939 | Elected in 1930. | 25 | 74th | 25 | Re-elected in 1932. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 30 | M. M. Logan | Democratic | March 4, 1931 – October 3, 1939 | Re-elected in 1936.Died. | 26 | 75th | 25 | Re-elected in 1932. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 30 | M. M. Logan | Democratic | March 4, 1931 – October 3, 1939 | Re-elected in 1936.Died. | 26 | 76th | 26 | Re-elected in 1938. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| Vacant | Vacant | Vacant | October 3, 1939 – October 10, 1939 | | 26 | 76th | 26 | Re-elected in 1938. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 31 | Happy Chandler | Democratic | October 10, 1939 – November 1, 1945 | Appointed to continue Logan's term.Elected in 1940 to finish Logan's term. | 26 | 76th | 26 | Re-elected in 1938. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 31 | Happy Chandler | Democratic | October 10, 1939 – November 1, 1945 | Appointed to continue Logan's term.Elected in 1940 to finish Logan's term. | 26 | 77th | 26 | Re-elected in 1938. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 31 | Happy Chandler | Democratic | October 10, 1939 – November 1, 1945 | Re-elected in 1942.Resigned to become Commissioner of Baseball. | 27 | 78th | 26 | Re-elected in 1938. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 31 | Happy Chandler | Democratic | October 10, 1939 – November 1, 1945 | Re-elected in 1942.Resigned to become Commissioner of Baseball. | 27 | 79th | 27 | Re-elected in 1944.Resigned to become U.S. Vice President. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| Vacant | Vacant | Vacant | November 1, 1945 – November 19, 1945 | | 27 | 79th | 27 | Re-elected in 1944.Resigned to become U.S. Vice President. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 32 | William A. Stanfill | Republican | November 19, 1945 – November 5, 1946 | Appointed to continue Chandler's term.Retired. | 27 | 79th | 27 | Re-elected in 1944.Resigned to become U.S. Vice President. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 33 | John Sherman Cooper | Republican | November 6, 1946 – January 3, 1949 | Elected to finish Chandler's term.Lost re-election. | 27 | 79th | 27 | Re-elected in 1944.Resigned to become U.S. Vice President. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 33 | John Sherman Cooper | Republican | November 6, 1946 – January 3, 1949 | Elected to finish Chandler's term.Lost re-election. | 27 | 80th | 27 | Re-elected in 1944.Resigned to become U.S. Vice President. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 34 | Virgil Chapman | Democratic | January 3, 1949 – March 8, 1951 | Elected in 1948.Died. | 28 | 81st | 27 | Re-elected in 1944.Resigned to become U.S. Vice President. | March 4, 1927 – January 19, 1949 | Democratic | Alben W. Barkley | 31 |
| 34 | Virgil Chapman | Democratic | January 3, 1949 – March 8, 1951 | Elected in 1948.Died. | 28 | 81st | 27 | Appointed to continue Barkley's term.Resigned to trigger special election. | January 20, 1949 – November 26, 1950 | Democratic | Garrett Withers | 32 |
| 34 | Virgil Chapman | Democratic | January 3, 1949 – March 8, 1951 | Elected in 1948.Died. | 28 | 81st | 27 | Elected to finish Barkley's term, having been elected to the next term. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| 34 | Virgil Chapman | Democratic | January 3, 1949 – March 8, 1951 | Elected in 1948.Died. | 28 | 82nd | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| Vacant | Vacant | Vacant | March 8, 1951 – March 19, 1951 | | 28 | 82nd | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| 35 | Thomas R. Underwood | Democratic | March 19, 1951 – November 4, 1952 | Appointed to continue Chapman's term.Lost election to finish Chapman's term. | 28 | 82nd | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| 36 | John Sherman Cooper | Republican | November 5, 1952 – January 3, 1955 | Elected to finish Chapman's term. Lost re-election. | 28 | 82nd | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| 36 | John Sherman Cooper | Republican | November 5, 1952 – January 3, 1955 | Elected to finish Chapman's term. Lost re-election. | 28 | 83rd | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| 37 | Alben W. Barkley | Democratic | January 3, 1955 – April 30, 1956 | Elected in 1954.Died. | 29 | 84th | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| Vacant | Vacant | Vacant | April 30, 1956 – June 21, 1956 | | 29 | 84th | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| 38 | Robert Humphreys | Democratic | June 21, 1956 – November 6, 1956 | Appointed to continue Barkley's term.Retired when elected successor qualified. | 29 | 84th | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Elected to finish Barkley's term. | 29 | 84th | 28 | Elected to full term in 1950.Lost re-election. | November 27, 1950 – January 3, 1957 | Democratic | Earle Clements | 33 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Elected to finish Barkley's term. | 29 | 85th | 29 | Elected in 1956. | January 3, 1957 – December 16, 1968 | Republican | Thruston Morton | 34 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Elected to finish Barkley's term. | 29 | 86th | 29 | Elected in 1956. | January 3, 1957 – December 16, 1968 | Republican | Thruston Morton | 34 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Re-elected in 1960. | 30 | 87th | 29 | Elected in 1956. | January 3, 1957 – December 16, 1968 | Republican | Thruston Morton | 34 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Re-elected in 1960. | 30 | 88th | 30 | Re-elected in 1962.Retired, and resigned early to give successor preferential seniority. | January 3, 1957 – December 16, 1968 | Republican | Thruston Morton | 34 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Re-elected in 1960. | 30 | 89th | 30 | Re-elected in 1962.Retired, and resigned early to give successor preferential seniority. | January 3, 1957 – December 16, 1968 | Republican | Thruston Morton | 34 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Re-elected in 1966.Retired. | 31 | 90th | 30 | Re-elected in 1962.Retired, and resigned early to give successor preferential seniority. | January 3, 1957 – December 16, 1968 | Republican | Thruston Morton | 34 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Re-elected in 1966.Retired. | 31 | 90th | 30 | Appointed to finish Morton's term, having already been elected to the next term. | December 17, 1968 – December 27, 1974 | Republican | Marlow Cook | 35 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Re-elected in 1966.Retired. | 31 | 91st | 31 | Elected in 1968.Lost re-election, and resigned early to give successor preferential seniority. | December 17, 1968 – December 27, 1974 | Republican | Marlow Cook | 35 |
| 39 | John Sherman Cooper | Republican | November 7, 1956 – January 3, 1973 | Re-elected in 1966.Retired. | 31 | 92nd | 31 | Elected in 1968.Lost re-election, and resigned early to give successor preferential seniority. | December 17, 1968 – December 27, 1974 | Republican | Marlow Cook | 35 |
| 40 | Walter Dee Huddleston | Democratic | January 3, 1973 – January 3, 1985 | Elected in 1972. | 32 | 93rd | 31 | Elected in 1968.Lost re-election, and resigned early to give successor preferential seniority. | December 17, 1968 – December 27, 1974 | Republican | Marlow Cook | 35 |
| 40 | Walter Dee Huddleston | Democratic | January 3, 1973 – January 3, 1985 | Elected in 1972. | 32 | 93rd | 31 | Appointed to finish Cook's term, having already been elected to the next term. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 40 | Walter Dee Huddleston | Democratic | January 3, 1973 – January 3, 1985 | Elected in 1972. | 32 | 94th | 32 | Elected in 1974. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 40 | Walter Dee Huddleston | Democratic | January 3, 1973 – January 3, 1985 | Elected in 1972. | 32 | 95th | 32 | Elected in 1974. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 40 | Walter Dee Huddleston | Democratic | January 3, 1973 – January 3, 1985 | Re-elected in 1978.Lost re-election. | 33 | 96th | 32 | Elected in 1974. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 40 | Walter Dee Huddleston | Democratic | January 3, 1973 – January 3, 1985 | Re-elected in 1978.Lost re-election. | 33 | 97th | 33 | Re-elected in 1980. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 40 | Walter Dee Huddleston | Democratic | January 3, 1973 – January 3, 1985 | Re-elected in 1978.Lost re-election. | 33 | 98th | 33 | Re-elected in 1980. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Elected in 1984. | 34 | 99th | 33 | Re-elected in 1980. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Elected in 1984. | 34 | 100th | 34 | Re-elected in 1986. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Elected in 1984. | 34 | 101st | 34 | Re-elected in 1986. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 1990. | 35 | 102nd | 34 | Re-elected in 1986. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 1990. | 35 | 103rd | 35 | Re-elected in 1992.Retired. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 1990. | 35 | 104th | 35 | Re-elected in 1992.Retired. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 1996. | 36 | 105th | 35 | Re-elected in 1992.Retired. | December 28, 1974 – January 3, 1999 | Democratic | Wendell Ford | 36 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 1996. | 36 | 106th | 36 | Elected in 1998. | January 3, 1999 – January 3, 2011 | Republican | Jim Bunning | 37 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 1996. | 36 | 107th | 36 | Elected in 1998. | January 3, 1999 – January 3, 2011 | Republican | Jim Bunning | 37 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2002. | 37 | 108th | 36 | Elected in 1998. | January 3, 1999 – January 3, 2011 | Republican | Jim Bunning | 37 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2002. | 37 | 109th | 37 | Re-elected in 2004.Retired. | January 3, 1999 – January 3, 2011 | Republican | Jim Bunning | 37 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2002. | 37 | 110th | 37 | Re-elected in 2004.Retired. | January 3, 1999 – January 3, 2011 | Republican | Jim Bunning | 37 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2008. | 38 | 111th | 37 | Re-elected in 2004.Retired. | January 3, 1999 – January 3, 2011 | Republican | Jim Bunning | 37 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2008. | 38 | 112th | 38 | Elected in 2010. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2008. | 38 | 113th | 38 | Elected in 2010. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2014. | 39 | 114th | 38 | Elected in 2010. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2014. | 39 | 115th | 39 | Re-elected in 2016. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2014. | 39 | 116th | 39 | Re-elected in 2016. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2020. Retiring at the end of term. | 40 | 117th | 39 | Re-elected in 2016. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2020. Retiring at the end of term. | 40 | 118th | 40 | Re-elected in 2022. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| 41 | Mitch McConnell | Republican | January 3, 1985 – present | Re-elected in 2020. Retiring at the end of term. | 40 | 119th | 40 | Re-elected in 2022. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | 41 | 120th | 40 | Re-elected in 2022. | January 3, 2011 – present | Republican | Rand Paul | 38 |
| To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | 41 | 121st | 41 | 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 2 | Class 2 | Class 2 | Class 2 | Class 2 | Class 2 | C | Class 3 | Class 3 | Class 3 | Class 3 | Class 3 | Class 3 |