An election to the 57th Parliament of the United Kingdom for the constituency area of Chingford and Woodford Green, held as part of the general election on 8 June 2017.
Conservative hold by Iain Duncan Smith with a majority of 2,438 - 5.2% - on a turnout of 71.2%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| DUNCAN SMITH, Iain | Con | 23,076 | 49.1% | 1.2% |
| MAHMOOD, Bilal | Lab | 20,638 | 43.9% | 15.2% |
| UNGER, Deborah | LD | 2,043 | 4.4% | -1.1% |
| KING, Sinead | Green | 1,204 | 2.6% | -1.7% |
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 65,958, having a valid vote count of 46,961 and an invalid vote count of 170.
Result declared at 02:52 on 9 June 2017.