An election to the 56th Parliament of the United Kingdom for the constituency area of Swansea West, held as part of the general election on 7 May 2015.
Labour hold by Geraint Davies with a majority of 7,036 - 20.0% - on a turnout of 59.8%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| DAVIES, Geraint | Lab / Co-op | 14,967 | 42.6% | 7.9% |
| LANE, Emma | Con | 7,931 | 22.6% | 1.7% |
| FORD, Martyn | UKIP | 4,744 | 13.5% | 11.5% |
| HOLLEY, Chris | LD | 3,178 | 9.0% | -24.2% |
| ROBERTS, Harri | PC | 2,266 | 6.4% | 2.4% |
| WAKELING, Ashley | Green | 1,784 | 5.1% | 3.9% |
| JOB, Ronnie | TUSC | 159 | 0.5% | -0.1% |
| ROSSER, Maxwell | Ind | 78 | 0.2% | - |
| JOHNSON, Brian | SPGB | 49 | 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 58,776, having a valid vote count of 35,156 and an invalid vote count of 116.
Result declared at 06:10 on 8 May 2015.