CONSTITUENCY RESULT : Lagan Valley
| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Jeffrey M. Donaldson | Democratic Unionist Party | Male | 19,586 | 43.1% | -16.4 | ||
| Sorcha Eastwood | Alliance | Female | 13,087 | 28.8% | +17.7 | ||
| Robbie Butler | Ulster Unionist Party | Male | 8,606 | 19.0% | +2.2 | ||
| Ally Haydock | Social Democratic and Labour Party | Female | 1,758 | 3.9% | -3.7 | ||
| Gary McCleave | Sinn Fein | Male | 1,098 | 2.4% | -1.1 | ||
| Gary Hynds | Conservative | Male | 955 | 2.1% | +1.1 | ||
| Alan Love | UK Independence Party | Male | 315 | 0.7% | 0.0 |
| Election statistics | ||
| Majority | ||
| Votes | 6,499 | |
| Percent | 14.3% | |
| Rank (1 = highest %) | 442 | |
| Turnout | ||
| Constituency | 60.0% | |
| Region | 61.8% | |
| UK | 67.3% | |
| Constituency in 2017 | 62.1% | |
| Size of electorate | 75,735 | |
| Valid votes cast | 45,405 |