An election to the 57th Parliament of the United Kingdom for the constituency area of Peterborough, held as part of the general election on 8 June 2017.
Labour gain from Conservatives by Fiona Onasanya with a majority of 607 - 1.3% - on a turnout of 66.7%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| ONASANYA, Fiona | Lab | 22,950 | 48.1% | 12.5% |
| JACKSON, Stewart | Con | 22,343 | 46.8% | 7.1% |
| SELLICK, Beki | LD | 1,597 | 3.3% | -0.4% |
| RADIC, Fiona | Green | 848 | 1.8% | -0.8% |
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 71,522, having a valid vote count of 47,738 and an invalid vote count of 145.
Result declared at 03:13 on 9 June 2017.