List of Great Britain by-elections (1790–1800) By-elections 17th Parliament (1790–1796)

| Date_ | Constituency | c_u | Former_Incumbent | Winner | Cause_ |
|---|---|---|---|---|---|
| 6 March 1793 | City of London | u* | Brook Watson | John William Anderson | Resignation |
| 20 March 1793 | Anstruther Easter | u | Sir John Anstruther | Robert Anstruther | Resignation |
| 22 March 1793 | Heytesbury | u | The Earl of Barrymore | Charles Rose Ellis | Death |
| 30 March 1793 | Knaresborough | u* | Viscount Duncannon | Lord John Townshend | Succeeded to a peerage |
| 30 March 1793 | Warwickshire | u* | Sir Robert Lawley | Sir John Mordaunt | Death |
| 9 April 1793 | Carmarthenshire | u* | George Talbot Rice | James Hamlyn | Succeeded to a peerage |
| 17 April 1793 | Great Grimsby | u | Dudley Long North | Dudley Long North | Void Election |
| 17 April 1793 | Great Grimsby | u | John Harrison | John Harrison | Void Election |