Penllyn, Vale of Glamorgan
{{Use dmy dates|date=October 2019}}
{{Infobox UK place
| coordinates = {{coord|51.475228|-3.480110|display=inline,title}}
| country = Wales
| official_name = Penllyn
| welsh_name = Pen-llin
| community_wales = Penllyn
| unitary_wales = Vale of Glamorgan
| lieutenancy_wales = South Glamorgan
| constituency_westminster = Vale of Glamorgan
| constituency_welsh_assembly = Vale of Glamorgan
| post_town = Cowbridge
| postcode_area = CF
| postcode_district = CF71
| dial_code = 01446
| os_grid_reference = SS973761
| population = 1506
| static_image =
| static_image_caption =
| module= 240px
Map of the community
}}
Penllyn ({{langx|cy|Pen-llin}}) is a village and community in the Vale of Glamorgan, Wales. It is located north west of the market town of Cowbridge. As a community it contains the settlements of Llansannor, Pentre Meyrick, Trerhyngyll, Ystradowen and Penllyn itself.{{cite book |editor1-first=John |editor1-last=Davies|editor1-link=John Davies (historian)|editor2-first=Nigel |editor2-last=Jenkins | editor2-link=Nigel Jenkins| editor3-first=Baines |editor3-last=Menna|editor4-first=Peredur I. |editor4-last=Lynch|title=The Welsh Academy Encyclopaedia of Wales |year=2008 |publisher=University of Wales Press|location=Cardiff |isbn=978-0-7083-1953-6|page=492}}
Penllyn is home to Penllyn Castle, a 12th-century fortification which, although ruinous, is now adjoined by a castellated mansion originally built in the late 16th century.
The smaller hamlet of Graig Penllyn, about {{convert|1.3|mile|km}} north of the main village, is notable for its pub the Barley Mow.{{cite web|url=http://cowbridgeguide.co.uk/pubs/thebarleymowinn|title=The Barley Mow Inn, a pub in Cowbridge, South Wales|publisher=cowbridgeguide.co.uk|access-date=30 September 2016}}{{cite web|url=http://whatpub.com/pubs/VAL/V034/barley-mow-craig-penllyn|title=Barley Mow, Craig Penllyn|publisher=whatpub.com|access-date=30 September 2016}}
File:The Barley Mow at Graig Penllyn - geograph.org.uk - 923306.jpg
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