A general election to the 57th Parliament of the United Kingdom with an electorate of 46,836,533, having 32,204,184 valid votes and 74,188 invalid votes.
Read the House of Commons Library briefing.
By area - By majority - By vote share of winning candidate - By turnout - By declaration time - By party - Non-party candidates
| Ranking | Constituency | Winning candidate | Winning party | Majority | Valid vote count | Majority / valid vote count |
| 1 | Belfast West | MASKEY, Paul | SF | 21,652 | 40,633 | 53.3% |
| 2 | Strangford | SHANNON, Jim | DUP | 18,343 | 38,749 | 47.3% |
| 3 | Lagan Valley | DONALDSON, Jeffrey M. | DUP | 19,229 | 44,926 | 42.8% |
| 4 | North Antrim | PAISLEY, Ian | DUP | 20,643 | 48,460 | 42.6% |
| 5 | East Antrim | WILSON, Sammy | DUP | 15,923 | 38,143 | 41.7% |
| 6 | Mid Ulster | MOLLOY, Francie | SF | 12,890 | 46,694 | 27.6% |
| 7 | West Tyrone | MCELDUFF, Barry | SF | 10,342 | 43,486 | 23.8% |
| 8 | Newry and Armagh | BRADY, Mickey | SF | 12,489 | 53,579 | 23.3% |
| 9 | East Londonderry | CAMPBELL, Gregory | DUP | 8,842 | 41,030 | 21.6% |
| 10 | Belfast East | ROBINSON, Gavin | DUP | 8,474 | 42,890 | 19.8% |
| 11 | Upper Bann | SIMPSON, David | DUP | 7,992 | 51,258 | 15.6% |
| 12 | South Antrim | GIRVAN, Paul | DUP | 3,208 | 43,170 | 7.4% |
| 13 | South Down | HAZZARD, Chris | SF | 2,446 | 50,893 | 4.8% |
| 14 | Belfast South | LITTLE PENGELLY, Emma | DUP | 1,996 | 43,705 | 4.6% |
| 15 | Belfast North | DODDS, Nigel | DUP | 2,081 | 45,936 | 4.5% |
| 16 | North Down | HERMON, Sylvia | Ind | 1,208 | 39,185 | 3.1% |
| 17 | Fermanagh and South Tyrone | GILDERNEW, Michelle | SF | 875 | 53,481 | 1.6% |
| 18 | Foyle | MCCALLION, Elisha | SF | 169 | 45,965 | 0.4% |