An election to the 57th Parliament of the United Kingdom for the constituency area of North Down, held as part of the general election on 8 June 2017.
Independent hold by Sylvia Hermon with a majority of 1,208 - 3.1% - on a turnout of 60.9%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| HERMON, Sylvia | Ind | 16,148 | 41.2% | - |
| EASTON, Alex | DUP | 14,940 | 38.1% | 14.5% |
| MUIR, Andrew | APNI | 3,639 | 9.3% | 0.7% |
| AGNEW, Steven | Green | 2,549 | 6.5% | 1.1% |
| SHIVERS, Frank | Con | 941 | 2.4% | -2.0% |
| MCCARTNEY, Therese | SF | 531 | 1.4% | 0.6% |
| MCNEILL, Caoimhe | SDLP | 400 | 1.0% | 0.0% |
| REYNOLDS, Gavan | Ind | 37 | 0.1% | - |
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.
An electorate of 64,334, having a valid vote count of 39,185 and an invalid vote count of 83.
Result declared at 01:13 on 9 June 2017.