A general election to the 56th Parliament of the United Kingdom with an electorate of 46,354,197, having 30,697,525 valid votes and 102,639 invalid votes.
Read the House of Commons Library briefing.
Elections contested - Elections won
| Constituency | Candidate | Electorate | Turnout | Votes | Vote share | Vote change | Position |
| Belfast East | Ó DONNGHAILE, Niall | 63,157 | 62.8% | 823 | 2.1% | -0.3% | 5th |
| Belfast North | KELLY, Gerry | 68,553 | 59.2% | 13,770 | 33.9% | -0.1% | 2nd |
| Belfast South | Ó MUILLEOIR, Máirtín | 64,927 | 60.0% | 5,402 | 13.9% | 0.0% | 4th |
| Belfast West | MASKEY, Paul | 62,697 | 56.3% | 19,163 | 54.2% | -16.8% | 1st |
| East Antrim | MCMULLAN, Oliver | 62,811 | 53.3% | 2,314 | 6.9% | 0.1% | 5th |
| East Londonderry | ARCHIBALD, Caoimhe | 66,926 | 51.9% | 6,859 | 19.8% | 0.5% | 2nd |
| Fermanagh and South Tyrone | GILDERNEW, Michelle | 70,108 | 72.6% | 23,078 | 45.4% | -0.1% | 2nd |
| Foyle | Ó HEÁRA, Gearóid | 70,036 | 52.8% | 11,679 | 31.6% | -0.4% | 2nd |
| Lagan Valley | MCGEOUGH, Jacqui | 71,152 | 55.9% | 1,144 | 2.9% | -1.1% | 7th |
| Mid Ulster | MOLLOY, Francie | 67,832 | 60.3% | 19,935 | 48.7% | -3.3% | 1st |
| Newry and Armagh | BRADY, Mickey | 77,633 | 64.2% | 20,488 | 41.1% | -0.9% | 1st |
| North Antrim | MCKAY, Daithí | 75,876 | 55.2% | 5,143 | 12.3% | -0.1% | 3rd |
| North Down | MCCARTNEY, Therese | 64,207 | 56.0% | 273 | 0.8% | 0.0% | 10th |
| South Antrim | KEARNEY, Declan | 67,425 | 54.2% | 4,699 | 12.9% | -1.0% | 3rd |
| South Down | HAZZARD, Chris | 75,220 | 56.8% | 12,186 | 28.5% | -0.2% | 2nd |
| Strangford | BAILIE, Sheila | 64,289 | 52.8% | 876 | 2.6% | -1.0% | 8th |
| Upper Bann | SEELEY, Catherine | 80,060 | 59.0% | 11,593 | 24.6% | -0.2% | 3rd |
| West Tyrone | DOHERTY, Pat | 63,856 | 60.5% | 16,807 | 43.5% | -4.9% | 1st |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.