An election to the 58th Parliament of the United Kingdom for the constituency area of Welwyn Hatfield, held as part of the general election on 12 December 2019.
Conservative hold by Grant Shapps with a majority of 10,955 - 21.0% - on a turnout of 69.5%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| SHAPPS, Grant | Con | 27,394 | 52.6% | 1.6% |
| NEWBIGGING, Rosie | Lab | 16,439 | 31.6% | -5.2% |
| ZUKOWSKYJ, Paul | LD | 6,602 | 12.7% | 5.3% |
| SAYERS, Oliver | Green | 1,618 | 3.1% | 1.5% |
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 74,892, having a valid vote count of 52,053 and an invalid vote count of 226.
Result declared at 04:38 on 13 December 2019.