An election to the 56th Parliament of the United Kingdom for the constituency area of Middlesbrough, held as part of the general election on 7 May 2015.
Labour hold by Andy McDonald with a majority of 12,477 - 38.1% - on a turnout of 52.9%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| MCDONALD, Andy | Lab | 18,584 | 56.8% | 10.9% |
| BAKER, Nigel | UKIP | 6,107 | 18.7% | 15.0% |
| CLARKE, Simon | Con | 5,388 | 16.5% | -2.3% |
| GRAHAM, Hannah | Green | 1,407 | 4.3% | - |
| KILPATRICK, Richard | LD | 1,220 | 3.7% | -16.2% |
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 61,873, having a valid vote count of 32,706 and an invalid vote count of 174.
Result declared at 07:32 on 8 May 2015.