Cwm Nantcol

{{Short description|Valley in Gwynedd, Wales}}

{{Use dmy dates|date=April 2022}}

Cwm Nantcol is a valley in the Ardudwy area of the county of Gwynedd in Wales.

It lies in the Rhinogydd range of mountains in Snowdonia and carries the Afon Cwmnantcol. At the head of Cwn Nantcol is the Bwlch Drws Ardudwy pass, from where it is possible to negotiate the summits of Rhinog Fawr and Rhinog Fach.