| Name: | First Elected or Appointed: |
| Jackman-Brown, Pam B. | November 8, 2011 |
| Jackson, Bernard H. | November 4, 1986 |
| Jackson, M. Randolph | November 8, 1988 |
| Jackson, Samuel W. | November 9, 1871 |
| Jacobson, Laura Lee | November 5, 2002 |
| James, Amaziah B. | November 8, 1853 |
| James, Debra A. | November 5, 2013 |
| James, Frank A. | November 5, 1935 |
| James, Ta-Tanisha D. | November 3, 2020 |
| Jamieson, Linda S. | November 5, 2002 |
| Janowitz, Norman | November 2, 2010 |
| Jasen, Matthew J. | November 25, 1957 |
| Jay, John | May 8, 1777 |
| Jaycox, Walter H. | November 6, 1906 |
| Jenks, Almet F. | November 8, 1898 |
| Jewett, Freeborn G. | March 5, 1845 |
| Jimenez Salta, Dawn M. | November 6, 1906 |
| Jiudice, Joseph | November 4, 1975 |
| Johnson, Cortland A. | November 3, 1942 |
| Johnson, Diana A. | November 7, 2000 |
| Johnson, Frank E. | March 29, 1939 |
| Johnson, Jese | November 4, 1884 |
| Johnson, Robert T. | November 3, 2015 |
| Johnson, Rudolph U. | November 8, 1977 |
| Johnson, Thomas | May 15, 1691 |
| Johnson, Thomas A. | June 7, 1847 |
| Johnson-Bell, Michelle A. | November 3, 2020 |
| Johnston, John B. | November 8, 1927 |
| Jonas, Zelda | November 3, 1998 |
| Jones, David | November 21, 1758 |
| Jones, John J. J. | November 8, 1977 |
| Jones, John J. J., Jr. | November 2, 1999 |
| Jones, Samuel | June 7, 1847 |
| Jones, Theodore T., Jr. | November 7, 1998 |
| Jones, Thomas | September 29, 1773 |
| Jones, Thomas R. | November 5, 1968 |
| Jordan, Anthony T., Jr. | November 4, 1975 |
| Joseph, Burton S. | November 4, 1997 |
| Joseph, Ingrid | November 6, 2018 |
| Joslin, Norman E. | November 4, 1980 |
| Joy, Daniel W. | November 5, 1985 |
| Judge, Beatrice M. | November 8, 1966 |
| Julian, Robert F. | November 7, 2000 |