The Local Government Boundary Commission for Wales (Welsh: Comisiwn Ffiniau Llywodraeth Leol i Gymru) is a Welsh Government sponsored body, responsible for defining borders for local elections in Wales.
Established in 1974, its role is to keep under review all local government areas in Wales, and the electoral arrangements for the principal areas, and to make such proposals to the National Assembly for Wales as seem desirable in the interests of effective and convenient local government.
Electoral arrangements in six authorities were reviewed after the penultimate round of Welsh local elections in 1999, and the changes were implemented at the elections on June 10, 2004.
The Commission also recently reviewed and amended some of the boundaries of the preserved counties of Wales.
In February 2009 the Minister for Local government and Social Justice issued Directions to the Commission to begin an Electoral Review across all the 22 local authorities in Wales. His stated aim was to rationalise representation at "... no lower than a ratio of 1 councillor to 1,750 electors "