Maryland's 3rd congressional district List of members representing the district List of members representing the district

| blank | Name_ | Took_office | Left_office | Party | Notes_Events_ |
|---|---|---|---|---|---|
| 19 | James Wray Williams | March 4, 1841 | December 2, 1842 | Democratic | died |
| 20 | Charles S. Sewall | January 2, 1843 | March 3, 1843 | Democratic |  |
| 21 | John Wethered | March 4, 1843 | March 3, 1845 | Whig |  |
| 22 | Thomas Watkins Ligon | March 4, 1845 | March 3, 1849 | Democratic |  |
| 23 | Edward Hammond | March 4, 1849 | March 3, 1853 | Democratic |  |
| 24 | Joshua Van Sant | March 4, 1853 | March 3, 1855 | Democratic |  |
| 25 | James Morrison Harris | March 4, 1855 | March 3, 1861 | Know-Nothing |  |
| 26 | Cornelius Lawrence Ludlow Leary | March 4, 1861 | March 3, 1863 | Unionist |  |
| 27 | Henry Winter Davis | March 4, 1863 | March 3, 1865 | Unconditional Unionist |  |
| 28 | Charles Edward Phelps | March 4, 1865 | March 3, 1867 | Unconditional Unionist |  |