An election to the 57th Parliament of the United Kingdom for the constituency area of Brentford and Isleworth, held as part of the general election on 8 June 2017.
Labour hold by Ruth Cadbury with a majority of 12,182 - 19.8% - on a turnout of 72.4%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| CADBURY, Ruth | Lab | 35,364 | 57.4% | 13.6% |
| MACLEOD, Mary | Con | 23,182 | 37.6% | -5.3% |
| BOURKE, Joe | LD | 3,083 | 5.0% | 1.0% |
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 85,164, having a valid vote count of 61,629 and an invalid vote count of 156.
Result declared at 03:32 on 9 June 2017.