An election to the 57th Parliament of the United Kingdom for the constituency area of St Albans, held as part of the general election on 8 June 2017.
Conservative hold by Anne Main with a majority of 6,109 - 10.7% - on a turnout of 78.3%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| MAIN, Anne | Con | 24,571 | 43.1% | -3.5% |
| COOPER, Daisy | LD | 18,462 | 32.4% | 13.9% |
| POLLARD, Kerry | Lab | 13,137 | 23.0% | -0.2% |
| EASTON, Jack | Green | 828 | 1.5% | -2.3% |
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 72,811, having a valid vote count of 56,998 and an invalid vote count of 142.
Result declared at 02:50 on 9 June 2017.