An election to the 57th Parliament of the United Kingdom for the constituency area of Sedgefield, held as part of the general election on 8 June 2017.
Labour hold by Phil Wilson with a majority of 6,059 - 14.6% - on a turnout of 65.1%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| WILSON, Phil | Lab | 22,202 | 53.4% | 6.2% |
| DAVISON, Dehenna | Con | 16,143 | 38.8% | 9.3% |
| GRANT, John | UKIP | 1,763 | 4.2% | -12.4% |
| PSALLIDAS, Stephen | LD | 797 | 1.9% | -1.6% |
| WILSON, Melissa | Green | 686 | 1.6% | -1.5% |
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 63,889, having a valid vote count of 41,591 and an invalid vote count of 62.
Result declared at 03:08 on 9 June 2017.