An election to the 56th Parliament of the United Kingdom for the constituency area of Witney, held as part of the general election on 7 May 2015.
Conservative hold by David Cameron with a majority of 25,155 - 43.0% - on a turnout of 73.3%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| CAMERON, David | Con | 35,201 | 60.2% | 1.4% |
| ENRIGHT, Duncan | Lab | 10,046 | 17.2% | 4.2% |
| STRUTT, Simon | UKIP | 5,352 | 9.2% | 5.7% |
| GRAHAM, Andy | LD | 3,953 | 6.8% | -12.7% |
| MACDONALD, Stuart | Green | 2,970 | 5.1% | 1.0% |
| PEEDELL, Clive | NHAP | 616 | 1.1% | - |
| BEX, Colin | WR | 110 | 0.2% | 0.1% |
| TOMPSON, Chris | Ind | 94 | 0.2% | - |
| SAUNDERS, Vivien | RVIS | 56 | 0.1% | - |
| SMITH, Bobby | GMBE | 37 | 0.1% | - |
| JACKSON, Deek | LP | 35 | 0.1% | - |
| HANDLEY, Nathan | Ind | 12 | 0.0% | - |
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 79,767, having a valid vote count of 58,482 and an invalid vote count of 188.
Result declared at 05:43 on 8 May 2015.