Ynys Môn (UK Parliament constituency)

Ynys Môn
County constituency
for the House of Commons
Interactive map of the constituency.
Location of the constituency within Wales
Preserved countyGwynedd
Electorate52,415 (March 2020)
Major settlementsHolyhead, Llangefni, Beaumaris, Amlwch
Current constituency
Created1536 (as Anglesey)
Member of ParliamentLlinos Medi (Plaid Cymru)
SeatsOne
Overlaps
SeneddYnys Môn, North Wales

Ynys Môn (Welsh pronunciation: [ˌənɨs ˈmoːn]; officially called Anglesey until 1983) is a constituency of the House of Commons of the Parliament of the United Kingdom. It elects one Member of Parliament (MP) by the first past the post system of election. It is one of five 'protected constituencies' within the UK, with boundaries defined by the Parliamentary Constituencies Act 2020 to be to those of Isle of Anglesey County Council where there must be a whole number of MPs rounded up to the nearest whole number with these boundaries.

The Ynys Môn Senedd constituency was created with the same boundaries in 1999 (as an Assembly constituency).

As of 2024, Ynys Môn is represented by Llinos Medi of Plaid Cymru.