An election to the 57th Parliament of the United Kingdom for the constituency area of Swansea West, held as part of the general election on 8 June 2017.
Labour hold by Geraint Davies with a majority of 10,598 - 28.4% - on a turnout of 65.5%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| DAVIES, Geraint | Lab / Co-op | 22,278 | 59.8% | 17.2% |
| LAWTON, Craig | Con | 11,680 | 31.3% | 8.8% |
| FITTER, Rhydian | PC | 1,529 | 4.1% | -2.3% |
| O'CARROLL, Michael | LD | 1,269 | 3.4% | -5.6% |
| WHITTALL, Mike | Green | 434 | 1.2% | -3.9% |
| JOHNSON, Brian | SPGB | 92 | 0.2% | 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 56,892, having a valid vote count of 37,282 and an invalid vote count of 83.
Result declared at 02:34 on 9 June 2017.