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

| Date_ | Constituency | c_u | Former_Incumbent | Winner | Cause_ |
|---|---|---|---|---|---|
| 21 February 1792 | St Mawes | u | John Graves Simcoe | Thomas Calvert | Resignation (Lieutenant Governor of Upper Canada) |
| 27 February 1792 | Leicestershire | u* | Sir Thomas Cave | Penn Assheton Curzon | Death |
| 28 February 1792 | Clitheroe | u | Penn Assheton Curzon | Assheton Curzon | Resignation to contest Leicestershire |
| 7 March 1792 | Rochester | c | Sir Richard Bickerton | Nathaniel Smith | Death |
| 19 March 1792 | Tewkesbury | u* | Sir William Codrington | William Dowdeswell | Death |
| 7 May 1792 | Malton | u* | William Weddell | George Damer | Death |
| 15 May 1792 | Huntingdonshire | u | Viscount Hinchingbrooke | Lancelot Brown | Succeeded to a peerage |
| 18 May 1792 | Aberdeen Burghs | u* | Alexander Callender | Alexander Allardyce | Death |
| 28 June 1792 | Liskeard | u* | Edward James Eliot | Edward James Eliot | Commissioner of the Board of Control |