An election to the 56th Parliament of the United Kingdom for the constituency area of Chippenham, held as part of the general election on 7 May 2015.
Conservative gain from Liberal Democrats by Michelle Donelan with a majority of 10,076 - 18.2% - on a turnout of 74.7%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| DONELAN, Michelle | Con | 26,354 | 47.6% | 6.5% |
| HAMES, Duncan | LD | 16,278 | 29.4% | -16.4% |
| REID, Julia | UKIP | 5,884 | 10.6% | 7.2% |
| NEWMAN, Andy | Lab | 4,561 | 8.2% | 1.3% |
| JOHNSTON, Tina | Green | 2,330 | 4.2% | 3.4% |
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 74,218, having a valid vote count of 55,407 and an invalid vote count of 100.
Result declared at 03:43 on 8 May 2015.