An election to the 56th Parliament of the United Kingdom for the constituency area of Pontypridd, held as part of the general election on 7 May 2015.
Labour hold by Owen Smith with a majority of 8,985 - 23.7% - on a turnout of 64.3%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| SMITH, Owen | Lab | 15,554 | 41.1% | 2.3% |
| MASON, Ann-Marie | Con | 6,569 | 17.3% | 1.2% |
| TOMKINSON, Andrew | UKIP | 5,085 | 13.4% | 10.1% |
| POWELL, Mike | LD | 4,904 | 12.9% | -18.2% |
| LEWIS, Osian | PC | 4,348 | 11.5% | 4.2% |
| CLAY, Katy | Green | 992 | 2.6% | 1.6% |
| BIGGS, Damien | SL | 332 | 0.9% | -0.4% |
| PEARSON, Esther | TUSC | 98 | 0.3% | - |
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 58,940, having a valid vote count of 37,882 and an invalid vote count of 101.
Result declared at 03:35 on 8 May 2015.