See main article: 1859 United Kingdom general election.
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1857 United Kingdom general election in Ireland |
| Previous Year: | 1857 |
| Previous Mps: | List of MPs elected in the 1857 United Kingdom general election |
| Next Election: | 1865 United Kingdom general election in Ireland |
| Next Year: | 1865 |
| Seats For Election: | 105 of the 670 seats to the House of Commons |
| Elected Mps: | List of MPs elected in the 1859 United Kingdom general election |
| Leader1: | Earl of Derby |
| Leader Since1: | July 1846 |
| Party1: | Conservative Party (UK) |
| Leaders Seat1: | House of Lords |
| Seats Before1: | 42 |
| Seats1: | 55 |
| Seat Change1: | 11 |
| Popular Vote1: | 35,258 |
| Percentage1: | 38.9% |
| Swing1: | 4.7% |
| Leader2: | Viscount Palmerston |
| Leader Since2: | 6 February 1855 |
| Party2: | Whigs (British political party) |
| Leaders Seat2: | Tiverton |
| Seats Before2: | 48 |
| Seats2: | 50 |
| Seat Change2: | 2 |
| Popular Vote2: | 57,409 |
| Percentage2: | 61.1% |
| Swing2: | 13.3% |
| Map Size: | 300px |
The 1859 United Kingdom general election in Ireland produced the last overall victory for the Conservatives in Ireland. They won a majority of seats on the island despite the Liberals receiving over 60% of the vote; this was partly due to a disproportionately large number of Conservative candidates standing unopposed. The franchise was restricted to the middle and upper classes.
Electoral reform in subsequent decades saw something of a rise in the Tory vote in Ireland accompanied by a diminution in the number of seats the party won. This was again due in some degree to the relative numbers of candidates standing unopposed for the two parties.
| Party | Candidates | Unopposed | Seats | Seats change | Votes | % | % Change | |
|---|---|---|---|---|---|---|---|---|
| 67 | 36 | 55 | 11 | 35,258 | 38.9 | 4.7 | ||
| 73 | 26 | 50 | 2 | 57,409 | 61.1 | 13.3 | ||
| Total | 140 | 62 | 105 | 92,667 | 100 |