An election to the 56th Parliament of the United Kingdom for the constituency area of South Cambridgeshire, held as part of the general election on 7 May 2015.
Conservative hold by Heidi Allen with a majority of 20,594 - 33.5% - on a turnout of 73.1%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| ALLEN, Heidi | Con | 31,454 | 51.1% | 3.7% |
| GREEF, Dan | Lab | 10,860 | 17.6% | 7.4% |
| KINDERSLEY, Sebastian | LD | 9,368 | 15.2% | -18.9% |
| MASON, Marion | UKIP | 6,010 | 9.8% | 6.6% |
| SAGGERS, Simon | Green | 3,848 | 6.3% | 4.5% |
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 84,132, having a valid vote count of 61,540 and an invalid vote count of 259.
Result declared at 05:02 on 8 May 2015.