An election to the 56th Parliament of the United Kingdom for the constituency area of Derby South, held as part of the general election on 7 May 2015.
Labour hold by Margaret Beckett with a majority of 8,828 - 21.6% - on a turnout of 58.1%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| BECKETT, Margaret | Lab | 20,007 | 49.0% | 5.7% |
| WILLIAMS, Evonne | Con | 11,179 | 27.4% | -1.1% |
| WEBB, Victor | UKIP | 6,341 | 15.5% | 11.1% |
| NAITTA, Joe | LD | 1,717 | 4.2% | -16.3% |
| FOSTER, David | Green | 1,208 | 3.0% | - |
| FERNANDEZ, Chris | TUSC | 225 | 0.6% | - |
| GALE, David | BI | 143 | 0.4% | - |
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 70,240, having a valid vote count of 40,820 and an invalid vote count of 166.
Result declared at 09:41 on 8 May 2015.