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

| Date_ | Constituency | c_u | Former_Incumbent | Winner | Cause_ |
|---|---|---|---|---|---|
| 19 December 1792 | Guildford | u* | Thomas Onslow | Thomas Onslow | Out-Ranger of Windsor Forest |
| 7 January 1793 | Grantham | u* | Philip Yorke | Simon Yorke | Death |
| 8 February 1793 | Lyme Regis | u* | Thomas Fane | Thomas Fane | Groom of the Bedchamber |
| 13 February 1793 | Newport (I.o.w) | u | The Viscount Melbourne | Peniston Lamb | Resignation |
| 20 February 1793 | Bere Alston | u* | John Mitford | Sir John Mitford | Solicitor General for England and Wales |
| 20 February 1793 | Weobley | u | Sir John Scott | Sir John Scott | Attorney General for England and Wales |
| 22 February 1793 | Newcastle-under-Lyme | c | Sir Archibald Macdonald | Sir Francis Ford | Resignation (Lord Chief Baron of the Exchequer) |