Gorllwyn

{{Short description|Mountain (613m) in Powys, Wales}}

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

{{Infobox mountain

| name = Gorllwyn

| photo = Gorllwynnnn.jpg

| photo_caption = Drygarn Fawr from the Gorllwyn plateau

| elevation_m = 613

| elevation_ref =

| prominence_m = 88

| parent_peak = Drygarn Fawr

| listing = Hewitt, Nuttall

| language = Welsh

| location = Powys, Wales

| range = Cambrian Mountains

| grid_ref_UK = SN862584

| topo = OS Landranger 147

}}

Gorllwyn is a subsidiary summit of Drygarn Fawr, located on a remote moorland plateau of the Cambrian Mountains. The summit is grassy and is surrounded by peat bog. There is a shelter cairn and a trig point.

To the west is Drygarn Fawr, its large cairns making it a very distinctive feature in an otherwise featureless plateau. Drygarn Fawr is separated from Gorllwyn by the pass of Bwlch y Ddau Faen. To the east the plateau continues towards Y Gamriw.Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. {{ISBN|1-85284-304-7}}. Radnor Forest lies further to the east.