An election to the 57th Parliament of the United Kingdom for the constituency area of Preseli Pembrokeshire, held as part of the general election on 8 June 2017.
Conservative hold by Stephen Crabb with a majority of 314 - 0.7% - on a turnout of 72.1%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| CRABB, Stephen | Con | 18,302 | 43.4% | 3.0% |
| THOMPSON, Philippa | Lab | 17,988 | 42.6% | 14.5% |
| WILLIAMS, Owain Llyr | PC | 2,711 | 6.4% | 0.2% |
| OVERTON, Chris | ISWSL | 1,209 | 2.9% | -6.3% |
| KILMISTER, Bob | LD | 1,106 | 2.6% | 0.7% |
| BALE, Susan | UKIP | 850 | 2.0% | -8.5% |
| MAILE, Rodney | NSOW | 31 | 0.1% | 0.0% |
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 58,554, having a valid vote count of 42,197 and an invalid vote count of 59.
Result declared at 05:11 on 9 June 2017.