An election to the 58th Parliament of the United Kingdom for the constituency area of Orpington, held as part of the general election on 12 December 2019.
Conservative hold by Gareth Bacon with a majority of 22,378 - 45.9% - on a turnout of 70.7%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| BACON, Gareth | Con | 30,882 | 63.4% | 0.4% |
| JEAL, Simon | Lab | 8,504 | 17.5% | -6.9% |
| TWEDDLE, Allan | LD | 7,552 | 15.5% | 8.9% |
| WHELLER, Karen | Green | 1,783 | 3.7% | 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 68,877, having a valid vote count of 48,721 and an invalid vote count of 263.
Result declared at 03:37 on 13 December 2019.