An election to the 57th Parliament of the United Kingdom for the constituency area of Blyth Valley, held as part of the general election on 8 June 2017.
Labour hold by Ronnie Campbell with a majority of 7,915 - 18.6% - on a turnout of 67.0%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| CAMPBELL, Ronnie | Lab | 23,770 | 55.9% | 9.6% |
| LEVY, Ian | Con | 15,855 | 37.3% | 15.6% |
| REID, Jeff | LD | 1,947 | 4.6% | -1.3% |
| FURNESS, Dawn | Green | 918 | 2.2% | -1.6% |
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 63,415, having a valid vote count of 42,490 and an invalid vote count of 70.
Result declared at 04:21 on 9 June 2017.