:Tre-Castell

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

{{Infobox UK place

| country = Wales

| welsh_name =

| official_name = Tre-Castell

| static_image =

| coordinates = {{coord|53.285321|-4.087229|region:GB|display=inline,title}}

| cardiff_distance_mi = 130.4

| cardiff_distance_km = 209.9

| london_distance_mi = 207.2

| london_distance_km = 333.4

| community_wales = Beaumaris

| unitary_wales = Anglesey

| constituency_welsh_assembly = Ynys Môn

| constituency_westminster = Ynys Môn

| post_town = Beaumaris

| postcode_district = LL58

| postcode_area =

| dial_code =

| os_grid_reference = SH 6095 7851

| population =

| map_type =

}}

Tre-Castell is a hamlet in the community of Beaumaris, Anglesey, Wales, which is 130.4 miles (209.9 km) from Cardiff and 207.2 miles (333.4 km) from London.{{cite map|title=Google Maps|publisher=Google}}