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

| Date_ | Constituency | c_u | Former_Incumbent | Winner | Cause_ |
|---|---|---|---|---|---|
| 16 August 1792 | Monmouthshire | u | John Morgan | Robert Salusbury | Death |
| 6 September 1792 | Preston | u | John Burgoyne | William Cunliffe Shawe | Death |
| 11 September 1792 | Eye | u | Richard Burton Phillipson | Peter Bathurst | Death |
| 14 September 1792 | Somerset | u | Edward Phelips | Henry Hippisley Coxe | Death |
| 15 September 1792 | Newcastle-under-Lyme | c* | John Leveson Gower | William Egerton | Death |
| 21 September 1792 | Banbury | u | Lord North | Frederick North | Succeeded to a peerage |
| 24 October 1792 | Winchelsea | u | Viscount Barnard | Sir Frederick Fletcher Vane | Succeeded to a peerage |
| 18 December 1792 | Cambridge University | u* | William Pitt the Younger | William Pitt the Younger | Lord Warden of the Cinque Ports |