| Radnorshire | |
|---|---|
| Former county constituency for the House of Commons | |
| 1542–1918 | |
| Seats | one |
| Replaced by | Brecon and Radnor |
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Radnorshire was created in 1542 as a constituency of the House of Commons of the Parliament of England then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1918. It elected one knight of the shire (MP) by the first past the post system.
By 1918, having too small a relative population the area was combined with that of Breconshire to form Brecon and Radnor constituency.