Llantysilio

{{Short description|Community in Denbighshire, Wales}}

{{Use dmy dates|date=October 2019}}

{{Infobox UK place

| country = Wales

| welsh_name = Llandysilio-yn-Iâl

| official_name = Llantysilio

| community_wales = Llantysilio

| unitary_wales = Denbighshire

| lieutenancy_wales = Clwyd

| constituency_welsh_assembly = Clwyd South

| constituency_westminster = Clwyd East

| population = 421

| population_ref = (2011)

| post_town = LLANGOLLEN

| postcode_district = LL20

| postcode_area = LL

| dial_code = 01978

| os_grid_reference = SJ1943

| coordinates = {{coord|52.983|-3.203|display=inline,title}}

| static_image = Llantysilio - Valle Crucis Abbey.jpg

| static_image_width = 240px

| static_image_caption = Valle Crucis Abbey

| module= 240px
Map of the community

}}

Llantysilio ({{langx|cy|Llandysilio-yn-Iâl}}) is a community in Denbighshire, Wales, near Llangollen. It has a population of 472,[http://www.neighbourhood.statistics.gov.uk/dissemination/viewFullDataset.do?instanceSelection=03070&productId=779&$ph=60_61&datasetInstanceId=3070&startColumn=1&numberOfColumns=8&containerAreaId=790562 Office for National Statistics : Census 2001 : Parish Headcounts : Denbighshire] Retrieved 2009-12-14 falling to 421 at the 2011 census.{{cite web|url=http://www.neighbourhood.statistics.gov.uk/dissemination/LeadKeyFigures.do?a=7&b=11125988&c=LL20+7BJ&d=16&e=62&g=6489785&i=1001x1003x1032x1004&o=362&m=0&r=0&s=1432465627338&enc=1|title=Community population 2015|accessdate=24 May 2015}}

The community includes the site of Valle Crucis Abbey, the Horseshoe Pass, and Llantysilio Hall; it also includes the villages of Pentredwr and Rhewl, as well as the areas of Eglwyseg, Llandynan, and Llidiart Annie.[http://www.pentredwr.co.uk/lcc/lccarea.htm Llantysilio Community Council] {{webarchive|url=https://web.archive.org/web/20120305144730/http://www.pentredwr.co.uk/lcc/lccarea.htm |date=2012-03-05 }}, pentredwr.co.uk