Mallwyd is a small village at the most southern end of Gwynedd, Wales, in the Mawddwy community, in the valley of the River Dyfi. It lies on the A470 approximately halfway between Dolgellau and Machyn

Llanymawddwy is a village in the community of Mawddwy in south-east Gwynedd, Wales, which is to the north of the larger village of Dinas Mawddwy, on the minor road which connects Dinas Mawddwy to Llan