Knighton Rural District
|- 1911||88,872 acres (359.65 km2)|
|- 1931||88,872 acres (359.65 km2)|
|- 1961||88,872 acres (359.65 km2)|
|- Origin||Sanitary district|
|- Succeeded by||Radnorshire|
|Government||Knighton Rural District Council|
|- Type||Civil parishes|
The district was formed by the Local Government Act 1894, when the existing Knighton Rural Sanitary District was divided into three: the section in Herefordshire was reconstituted as Wigmore Rural District, that in Shropshire as Teme Rural District, while the remaining section in Radnorshire became Knighton Rural District. The rural district council was based in the town of Knighton which was a separate urban district.
- Litton and Cascob
- Llanbadarn Fynydd
- Llanddewi Ystradenny
- Llanfihangel Rhydrithon
The district was abolished in 1974 under the Local Government Act 1972, which completely reorganised local administration in England and Wales. Its area became part of the District of Radnor in the new county of Powys.