Three constituencies cover the preserved county of Gwynedd for the House of Commons of the UK Parliament (Westminster), and are used also for elections to the Senedd. The current boundaries have been effective since the 2007 National Assembly for Wales election and the 2010 United Kingdom general election.[1][n 1].
The preserved county of Gwynedd shares its name with the southern bulk, the principal area, Gwynedd, Anglesey (Welsh: Ynys Môn), forms a second principal area, i.e. has its own local government council.
For Senedd elections, the constituencies each elect one assembly member and are grouped into additional-member electoral regions, in this instance the region is North Wales.
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