An election to the 57th Parliament of the United Kingdom for the constituency area of Castle Point, held as part of the general election on 8 June 2017.
Conservative hold by Rebecca Harris with a majority of 18,872 - 42.2% - on a turnout of 64.4%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| HARRIS, Rebecca | Con | 30,076 | 67.3% | 16.4% |
| COOKE, Joe | Lab | 11,204 | 25.1% | 11.2% |
| KURTEN, David | UKIP | 2,381 | 5.3% | -25.9% |
| HOLDER, Tom | LD | 1,049 | 2.3% | 0.6% |
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 69,470, having a valid vote count of 44,710 and an invalid vote count of 87.
Result declared at 01:51 on 9 June 2017.