An election to the 58th Parliament of the United Kingdom for the constituency area of Hemel Hempstead, held as part of the general election on 12 December 2019.
Conservative hold by Mike Penning with a majority of 14,563 - 28.4% - on a turnout of 69.3%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| PENNING, Mike | Con | 28,968 | 56.5% | 1.5% |
| AHMED, Nabila | Lab | 14,405 | 28.1% | -8.8% |
| BARRY, Sammy | LD | 6,317 | 12.3% | 6.1% |
| HASSAN, Sherief | Green | 1,581 | 3.1% | 1.1% |
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 74,035, having a valid vote count of 51,271 and an invalid vote count of 207.
Result declared at 02:20 on 13 December 2019.