An election to the 56th Parliament of the United Kingdom for the constituency area of Dewsbury, held as part of the general election on 7 May 2015.
Labour gain from Conservatives by Paula Sherriff with a majority of 1,451 - 2.7% - on a turnout of 67.2%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| SHERRIFF, Paula | Lab | 22,406 | 41.8% | 9.6% |
| REEVELL, Simon | Con | 20,955 | 39.1% | 4.1% |
| THACKRAY, Mark | UKIP | 6,649 | 12.4% | - |
| HUSSAIN, Ednan | LD | 1,924 | 3.6% | -13.4% |
| CRUDEN, Adrian | Green | 1,366 | 2.5% | 1.0% |
| CARTER, Richard | YF | 236 | 0.4% | - |
| HAKES, Steve | CPA | 94 | 0.2% | - |
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 79,770, having a valid vote count of 53,630 and an invalid vote count of 238.
Result declared at 07:24 on 8 May 2015.