Foel Hafod-fynydd is a subsidiary summit of Aran Fawddwy in southern Snowdonia, North Wales, Wales, United Kingdom.

It tops the east ridge of Erw y Ddafad-ddu.

Creiglyn Dyfi nestles in the bowl between Foel Hafod-fynydd and Aran Fawddwy.

The summit is grassy marked by a few stones.

Esgeiriau Gwynion lies to the north, Llechwedd Du to the east, and Gwaun Lydan to the south.