Whitton (Welsh: Llanddewi-yn-Hwytyn) is a village and a community in Radnorshire, Powys, Wales. It is located on the B4356 road 4 miles (6.4 km) south of Knighton. Hamlets in the community include Rhos-y-meirch and Pilleth.

Whitton
Whitton Location within Powys
Population	348 (2011)
OS grid reference	SO25856767
Principal area	Powys
Preserved county	Powys
Country	Wales
Sovereign state	United Kingdom
Post town	KNIGHTON
Postcode district	LD7
Post town	PRESTEIGNE
Postcode district	LD8
Police	Dyfed-Powys
Fire	Mid and West Wales
Ambulance	Welsh
UK Parliament	Brecon and Radnorshire
Senedd Cymru – Welsh Parliament	Brecon and Radnorshire
List of places UK Wales Powys 52°18′24″N 3°05′27″W / 52.3068°N 3.0909°W / 52.3068; -3.0909

The community's population in 2011 was 348.^[1]

St Mary's church is a grade II* listed building.^[2]

The community is part of the Llangunllo electoral ward for elections to Powys County Council.