An election to the 57th Parliament of the United Kingdom for the constituency area of Eastleigh, held as part of the general election on 8 June 2017.
Conservative hold by Mims Davies with a majority of 14,179 - 24.8% - on a turnout of 70.5%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| DAVIES, Mims | Con | 28,889 | 50.4% | 8.2% |
| THORNTON, Mike | LD | 14,710 | 25.7% | -0.1% |
| PAYNE, Jill | Lab | 11,454 | 20.0% | 7.1% |
| JONES, Malcolm | UKIP | 1,477 | 2.6% | -13.2% |
| MELDRUM, Ron | Green | 750 | 1.3% | -1.4% |
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 81,212, having a valid vote count of 57,280 and an invalid vote count of 136.
Result declared at 02:37 on 9 June 2017.