An election to the 56th Parliament of the United Kingdom for the constituency area of Belfast West, held as part of the general election on 7 May 2015.
Sinn Féin hold by Paul Maskey with a majority of 12,365 - 35.0% - on a turnout of 56.3%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| MASKEY, Paul | SF | 19,163 | 54.2% | -16.8% |
| CARROLL, Gerry | PBPA | 6,798 | 19.2% | - |
| ATTWOOD, Alex | SDLP | 3,475 | 9.8% | -6.5% |
| MCCOUBREY, Frank | DUP | 2,773 | 7.8% | 0.3% |
| MANWARING, Bill | UUP | 1,088 | 3.1% | - |
| HIGGINSON, Brian | UKIP | 765 | 2.2% | - |
| CATNEY, Gerard | APNI | 636 | 1.8% | -0.1% |
| LOWRY, John | WP | 597 | 1.7% | - |
| SHEA, Paul | Con | 34 | 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 62,697, having a valid vote count of 35,329 and an invalid vote count of 281.
Result declared at 03:04 on 8 May 2015.