An election to the 56th Parliament of the United Kingdom for the constituency area of South Antrim, held as part of the general election on 7 May 2015.
UUP gain from DUP by Danny Kinahan with a majority of 949 - 2.6% - on a turnout of 54.2%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| KINAHAN, Danny | UUP | 11,942 | 32.7% | - |
| MCCREA, William | DUP | 10,993 | 30.1% | -3.8% |
| KEARNEY, Declan | SF | 4,699 | 12.9% | -1.0% |
| KELLY, Neil | APNI | 3,576 | 9.8% | 2.1% |
| LYNCH, Roisin | SDLP | 2,990 | 8.2% | -0.5% |
| CAIRNS, Richard | TUV | 1,908 | 5.2% | -0.2% |
| DUNLOP, Alan | Con | 415 | 1.1% | - |
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 67,425, having a valid vote count of 36,523 and an invalid vote count of 211.
Result declared at 02:05 on 8 May 2015.