An election to the 57th Parliament of the United Kingdom for the constituency area of Brecon and Radnorshire, held as part of the general election on 8 June 2017.
Conservative hold by Chris Davies with a majority of 8,038 - 19.4% - on a turnout of 73.8%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| DAVIES, Chris | Con | 20,081 | 48.6% | 7.5% |
| GIBSON-WATT, James | LD | 12,043 | 29.1% | 0.8% |
| LODGE, Dan | Lab | 7,335 | 17.7% | 3.0% |
| HENEGHAN, Kate | PC | 1,299 | 3.1% | -1.3% |
| GILBERT, Peter | UKIP | 576 | 1.4% | -6.9% |
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 56,010, having a valid vote count of 41,334 and an invalid vote count of 63.
Result declared at 02:37 on 9 June 2017.