List of former members of the United States House of Representatives (J) Number of years/terms representative/delegate has served Number of years/terms representative/delegate has served

| Representative | Years | State_ | Party | Lifespan |
|---|---|---|---|---|
| David Emmons Johnston | 1899–1901 | West Virginia | Democratic | 1845–1917 |
| Harry Johnston | 1989–1997 | Florida | Democratic | 1931– |
| James T. Johnston | 1885–1889 | Indiana | Republican | 1839–1904 |
| John B. Johnston | 1919–1921 | New York | Democratic | 1882–1960 |
| Joseph E. Johnston | 1879–1881 | Virginia | Democratic | 1807–1891 |
| Josiah S. Johnston | 1821–1823 | Louisiana | Democratic-Republican | 1784–1833 |
| Rowland Louis Johnston | 1929–1931 | Missouri | Republican | 1872–1939 |
| Thomas D. Johnston | 1885–1889 | North Carolina | Democratic | 1840–1902 |
| Walter E. Johnston, III | 1981–1983 | North Carolina | Republican | 1936– |
| William Johnston | 1863–1865 | Ohio | Democratic | 1819–1866 |
| George Johnstone | 1891–1893 | South Carolina | Democratic | 1846–1921 |
| John L. Jolley | 1891–1893 | South Dakota | Republican | 1840–1926 |
| Charles A. Jonas | 1929–1931 | North Carolina | Republican | 1876–1955 |
| Charles R. Jonas | 1953–1973 | North Carolina | Republican | 1904–1988 |