Moel y Cerrig Duon is a subsidiary summit of Esgeiriau Gwynion in Gwynedd in north Wales.

Moel y Cerrig Duon tops the eastern end of a long peat bog plateau along with Llechwedd Du.

To the north-east is Foel y Geifr, to the east Cyrniau Nod and to the west is Llechwedd Du, Esgeiriau Gwynion, and Aran Fawddwy.

Its otherwise unremarkable SW top Foel y Groes(582m) forms the watershed between the Dee, Severn and Dyfi catchments.

The Aran range continues south from Moel y Cerrig Duon forming a large area of high moorland to the west of Lake Vyrnwy, crowned by Mynydd Coch.