An election to the 56th Parliament of the United Kingdom for the constituency area of Caithness, Sutherland and Easter Ross, held as part of the general election on 7 May 2015.
SNP gain from Liberal Democrats by Paul Monaghan with a majority of 3,844 - 11.2% - on a turnout of 71.9%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| MONAGHAN, Paul | SNP | 15,831 | 46.3% | 27.1% |
| THURSO, John | LD | 11,987 | 35.1% | -6.3% |
| ERSKINE, John | Lab | 3,061 | 9.0% | -15.7% |
| GRAHAM, Alastair | Con | 2,326 | 6.8% | -6.2% |
| MURRAY, Ann | UKIP | 981 | 2.9% | - |
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 47,558, having a valid vote count of 34,186 and an invalid vote count of 45.
Result declared at 04:44 on 8 May 2015.