Pen y Brynfforchog
{{Short description|Mountain in Gwynedd, Wales}}
{{Use dmy dates|date=April 2022}}
{{Infobox mountain
| name = Pen y Brynfforchog
| photo = Forchoggg.JPG
| photo_caption = Pen y Brynfforchog with Glasgwm (right) from Cribin Fawr
| elevation_m = 685
| elevation_ref =
| prominence_m = 71
| parent_peak = Glasgwm
| range = Snowdonia
| coordinates = {{coord|52.7462|-3.7529|type:mountain_region:GB|display=inline,title}}
| grid_ref_UK = SH817179
| topo = OS Landranger 124
}}
Pen y Brynfforchog is subsidiary summit of Glasgwm in North Wales forming part of the Aran range in southern Snowdonia.Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. {{ISBN|1-85284-304-7}}.
It is separated from Glasgwm by the pass, Bwlch y Fign. The summit is bare and marked by a few stones. The views to the Dyfi hills: include direct view of the Craig Portas ridge, with Maesglase and Cribin Fawr.{{cite web |url=http://www.mountaindays.net/mountains/peak.php?defn=0&area=5&peak=2091 |title=Mountaineering & Rock Climbing in the UK: Glasgwm |accessdate=2008-04-08 |last=Crocker |first=Chris |author2=Graham Jackson |work=Database of British Hills |publisher=Mountain Days.net |url-status=usurped |archiveurl=https://web.archive.org/web/20110719132433/http://www.mountaindays.net/mountains/peak.php?defn=0&area=5&peak=2091 |archivedate=2011-07-19 }}