Whitton (Welsh: Llanddewi-yn-Hwytyn; standardised: 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.

[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.