An election to the 57th Parliament of the United Kingdom for the constituency area of South Dorset, held as part of the general election on 8 June 2017.
Conservative hold by Richard Drax with a majority of 11,695 - 22.5% - on a turnout of 68.7%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| DRAX, Richard | Con | 29,135 | 56.1% | 7.2% |
| WARR, Tashi | Lab | 17,440 | 33.6% | 9.4% |
| LEGG, Howard | LD | 3,053 | 5.9% | -0.1% |
| ORRELL, Jon | Green | 2,278 | 4.4% | -0.3% |
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 75,553, having a valid vote count of 51,906 and an invalid vote count of 103.
Result declared at 03:05 on 9 June 2017.