Llanllwchaiarn

{{Short description|Village in Powys, Wales}}

{{For|the community in Ceredigion|Llanllwchaiarn, Ceredigion}}

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

{{One source|date=May 2017}}

{{Infobox UK place

| country = Wales

| welsh_name = Llanllwchaearn

| constituency_welsh_assembly =

| coordinates = {{coord|52.5198|-3.3172|display=inline,title}}

| official_name = Llanllwchaiarn

| population = 848

| population_ref = (2011){{cite web|url=http://www.neighbourhood.statistics.gov.uk/dissemination/LeadKeyFigures.do?a=7&b=11125951&c=SA45+9TB&d=16&e=62&g=6491457&i=1001x1003x1032x1004&m=0&r=0&s=1431369853525&enc=1|title=Community population 2011|access-date=11 May 2015}}

| unitary_wales = Powys

| lieutenancy_wales = Powys

| community_wales = Newtown and Llanllwchaiarn

| constituency_westminster = Montgomeryshire

| post_town = NEWTOWN

| postcode_district = SY16

| postcode_area = SY

| dial_code = 01686

| os_grid_reference = SO107921

}}

Llanllwchaiarn ({{langx|cy|Llanllwchaearn}}; {{IPA|cy|ɬanɬuː′χaɨarn}}) is a village on the outskirts of Newtown in Powys, Wales. It forms part of the community of Newtown and Llanllwchaiarn.

Aberbechan Hall was a Tudor mansion in the eastern part of the parish demolished in 1870.

The wards of Llanllwchaiarn North and Llanllwchaiarn West elect up to four councillors to Newtown and Llanllwchaiarn Town Council.{{cite web|url=http://newtown.org.uk/pages/ward-map |title=Ward Map of Newtown |publisher=Newtown and Llanllwchaiarn Town Council |access-date=11 September 2018 }}