An election to the 56th Parliament of the United Kingdom for the constituency area of Henley, held as part of the general election on 7 May 2015.
Conservative hold by John Howell with a majority of 25,375 - 45.9% - on a turnout of 70.9%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| HOWELL, John | Con | 32,292 | 58.5% | 2.3% |
| JUTHANI, Sam | Lab | 6,917 | 12.5% | 1.6% |
| COOPER, Sue | LD | 6,205 | 11.2% | -13.9% |
| JONES, Chris | UKIP | 6,007 | 10.9% | 7.5% |
| STEVENSON, Mark | Green | 3,815 | 6.9% | 4.4% |
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 77,946, having a valid vote count of 55,236 and an invalid vote count of 162.
Result declared at 06:18 on 8 May 2015.