:Bachau

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

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

{{Infobox UK place

| country = Wales

| coordinates = {{coord|53.32|-04.35|display=inline,title}}

| official_name = Bachau

| population =

| unitary_wales = Anglesey

| constituency_westminster =

| post_town =

| postcode_district =

| postcode_area =

| dial_code =

| os_grid_reference = SH4383

}}

Bachau ({{pronunciation|Bachau.ogg|Welsh pronunciation|help=no}}) is a small rural hamlet of about a dozen dwellings in Anglesey, North West Wales. Bachau is represented in the Senedd by Rhun ap Iorwerth (Plaid Cymru). In the House of Commons it is part of the Ynys Môn constituency.

It lies in the community of Llanerchymedd.