Glyntraian is a local government community in Wrexham County Borough in North Wales.The parish of Glyntraian, in the Ceiriog Valley, was formed when the ancient parish of Llangollen was divided into three traeanau*: Llangollen Traean, Trefor Traean, and Glyn Traean – which later became known as Glyntraian. Historically, the area contained the ancient townships of Cilcochwyn, Crogeniddon, Crogenwladus, Erwallo, Hafodgynfor, Nantygwryd, Pennant and Talygarth.
Nowadays, the Glyntraian community comprises the villages of Dolywern and Pontfadog and the hamlets of Llechrydau and Llwynmawr and parts of Castle Mill and Bronygarth. Since 1972, the area has been governed by Glyntraian Community Council (Welsh: Cyngor Cymuned Glyntraian), which replaced Glyntraian Parish Council (Local Government Act 1972).
Glyntraian borders the communities of Llansantffraid Glyn Ceiriog to the west and Chirk to the east, within Wrexham County Borough. To the north, Glyntraian shares a border with Denbighshire and to the south with Powys. The area also borders Shropshire to the south and east. At the 2011 Census, the community area had a population of 822.
*Traean or traian being the Welsh for third.The image shows the memorial bank in the main village of Pontfadog.