Nant Rhydyfedw

Nant Rhydyfedw is a short stream in Powys, Wales. It is a tributary of Nant Rhuddwr, which forms part of the border of England and Wales. Nant Rhydyfedw itself used to form part of the border between Montgomeryshire and Radnorshire.

The crossing at Radnorshire Gate is the northernmost named point in all of Radnorshire.