The Battle of Mechain was fought in Powys, Wales, in 1070, for rule of the Welsh kingdoms of Gwynedd and Powys. The battlefield may be near Llanfechain in northern Powys. A written account is included in the Brut y Tywysogion, the medieval Welsh chronicle of the princes. It is also referred to in the work of medieval poets such as Lewys Glyn Cothi.