:Llanallgo

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

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

{{Use British English|date=February 2025}}

{{Infobox UK place

| country = Wales

| official_name = Llanallgo

| static_image = Glan Rafon, Llanallgo - geograph.org.uk - 38505.jpg

| static_image_width = 250px

| coordinates = {{coord|53.343714|-4.248655|display=inline,title}}

| welsh_name =

| unitary_wales = Anglesey

| lieutenancy_wales = Gwynedd

| community_wales = Moelfre

| constituency_welsh_assembly = Ynys Môn

| constituency_westminster = Ynys Môn

| post_town = Moelfre

| postcode_district = LL72

| postcode_area =

| dial_code =

| os_grid_reference = SH 502851

| population =

| map_type =

}}

Llanallgo ({{IPA|cy|ɬanˈaɬɡɔ|lang}}) is a small village a mile from the coast of the island of Anglesey. The community is in the community of Moelfre, Anglesey, Wales, which is 136.4 miles (219.6 km) from Cardiff and 214.9 miles (345.9 km) from London.{{cite web|url=http://www.walesdirectory.co.uk/Towns/Llanallgo.htm |publisher=Walesdirectory.co.uk |title=Llanallgo |accessdate=January 17, 2016 |archiveurl=https://web.archive.org/web/20160416000754/http://www.walesdirectory.co.uk/Towns/Llanallgo.htm |archivedate=April 16, 2016 |url-status=dead }}

St Gallgo's Church, contains a memorial to hundreds lost when the Royal Charter bound from Australia to Liverpool hit the nearby Moelfre rocks. 140 are buried in the churchyard and others nearby. The monument is said to be of marble cut from near where the ship was lost on 26 October 1859.[http://www.visionofbritain.org.uk/place/4946 Llanallgo], 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales, Retrieved 17 January 2016

Nearby is Ffynnon Allgo, a medieval well which is a scheduled monument.{{Cite web|url=https://ancientmonuments.uk/|title=Ancient and Scheduled Monuments - History on the Ground|website=ancientmonuments.uk|accessdate=3 May 2023}} There is a caravan park. The nearest larger village is Marian-glas, about 1 km to the south.