Results for a UK general election on 8 June 2017 Elections contested by Plaid Cymru
A general election to the 57th Parliament of the United Kingdom with an electorate of 46,836,533, having 32,204,184 valid votes and 74,188 invalid votes.
Read the House of Commons Library briefing.
| Constituency | Candidate | Electorate | Turnout | Votes | Vote share | Vote change | Position |
| Aberavon | BENNISON, Andrew | 49,892 | 66.7% | 2,761 | 8.3% | -3.3% | 3rd |
| Aberconwy | JONES, Wyn | 45,251 | 71.0% | 3,170 | 9.9% | -1.9% | 3rd |
| Alyn and Deeside | HURST, Jacqui | 63,013 | 71.0% | 1,171 | 2.6% | -1.3% | 3rd |
| Arfon | WILLIAMS, Hywel | 41,367 | 68.2% | 11,519 | 40.8% | -3.1% | 1st |
| Blaenau Gwent | COPNER, Nigel | 51,227 | 63.2% | 6,880 | 21.2% | 12.3% | 2nd |
| Brecon and Radnorshire | HENEGHAN, Kate | 56,010 | 73.8% | 1,299 | 3.1% | -1.3% | 4th |
| Bridgend | WATKINS, Rhys | 62,185 | 69.6% | 1,783 | 4.1% | -2.9% | 3rd |
| Caerphilly | WHITTLE, Lindsay | 64,381 | 64.1% | 5,962 | 14.4% | -0.2% | 3rd |
| Cardiff Central | HOOPER, Mark | 59,288 | 68.1% | 999 | 2.5% | -2.5% | 4th |
| Cardiff North | WEBB, Steffan | 67,221 | 77.4% | 1,738 | 3.3% | -1.2% | 3rd |
| Cardiff South and Penarth | TITHERINGTON, Ian | 76,499 | 66.3% | 2,162 | 4.3% | -3.1% | 3rd |
| Cardiff West | DEEM, Michael | 66,775 | 69.8% | 4,418 | 9.5% | -4.4% | 3rd |
| Carmarthen East and Dinefwr | EDWARDS, Jonathan | 55,976 | 73.3% | 16,127 | 39.3% | 0.9% | 1st |
| Carmarthen West and South Pembrokeshire | THOMAS, Abi | 58,565 | 72.1% | 3,933 | 9.3% | -1.1% | 3rd |
| Ceredigion | LAKE, Ben | 54,262 | 73.3% | 11,623 | 29.2% | 1.6% | 1st |
| Clwyd South | ALLEN, Christopher | 53,729 | 69.7% | 2,293 | 6.1% | -4.2% | 3rd |
| Clwyd West | ROBERTS, Dilwyn | 58,263 | 69.8% | 3,918 | 9.6% | -2.6% | 3rd |
| Cynon Valley | WALTERS, Liz | 51,334 | 62.0% | 4,376 | 13.8% | -3.1% | 3rd |
| Delyn | ROWLINSON, Paul | 54,090 | 72.9% | 1,481 | 3.8% | -1.1% | 3rd |
| Dwyfor Meirionnydd | SAVILLE ROBERTS, Liz | 44,699 | 67.9% | 13,687 | 45.1% | 4.3% | 1st |
| Gower | ROBERTS, Harri | 62,163 | 73.3% | 1,669 | 3.7% | -3.5% | 3rd |
| Islwyn | JONES, Darren | 56,256 | 64.2% | 2,739 | 7.6% | -3.1% | 3rd |
| Llanelli | ARTHUR, Mari | 59,434 | 67.9% | 7,351 | 18.2% | -4.7% | 3rd |
| Merthyr Tydfil and Rhymney | KITCHER, Amy | 55,463 | 60.5% | 2,740 | 8.2% | -1.3% | 3rd |
| Monmouth | DAMON, Carole | 64,909 | 76.6% | 1,338 | 2.7% | -1.3% | 4th |
| Montgomeryshire | HUGHES, Aled Morgan | 50,755 | 68.7% | 1,960 | 5.6% | 0.4% | 4th |
| Neath | WILLIAMS, Daniel | 55,862 | 68.5% | 5,339 | 13.9% | -4.2% | 3rd |
| Newport East | WIXCEY, Cameron | 57,233 | 64.3% | 881 | 2.4% | -1.1% | 5th |
| Newport West | BOWLER-BROWN, Morgan | 64,399 | 67.5% | 1,077 | 2.5% | -1.5% | 4th |
| Ogmore | MARSHALL, Huw | 57,125 | 65.1% | 2,796 | 7.5% | -2.6% | 3rd |
| Pontypridd | ELIN, Fflur | 60,564 | 65.9% | 4,102 | 10.3% | -1.2% | 3rd |
| Preseli Pembrokeshire | WILLIAMS, Owain Llyr | 58,554 | 72.1% | 2,711 | 6.4% | 0.2% | 3rd |
| Rhondda | CENNARD, Branwen | 50,514 | 65.2% | 7,350 | 22.3% | -4.7% | 2nd |
| Swansea East | PHILLIPS, Steffan | 58,521 | 60.1% | 1,689 | 4.8% | -5.6% | 3rd |
| Swansea West | FITTER, Rhydian | 56,892 | 65.5% | 1,529 | 4.1% | -2.3% | 3rd |
| Torfaen | REES, Jeff | 61,839 | 62.1% | 2,059 | 5.4% | -0.4% | 3rd |
| Vale Of Clwyd | WYATT, David | 56,890 | 68.0% | 1,551 | 4.0% | -3.0% | 3rd |
| Vale Of Glamorgan | JOHNSON, Ian | 73,959 | 72.6% | 2,295 | 4.3% | -1.3% | 3rd |
| Wrexham | HARPER, Carrie | 49,881 | 70.4% | 1,753 | 5.0% | -2.6% | 3rd |
| Ynys Môn | WYN JONES, Ieuan | 52,921 | 70.6% | 10,237 | 27.4% | -3.1% | 3rd |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.
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.