The Isle of Anglesey County Council is the local authority for the Isle of Anglesey, a principal area with county status in Wales. Since 2022 the council has 35 councillors who represent 11 multi-member electoral wards.

Anglesey is an island off the north-west coast of Wales. It forms the bulk of the county known as the Isle of Anglesey, which also includes Holy Island and some islets and skerries. The county borders Gwynedd across the Menai Strait to the southeast, and is otherwise surrounded by the Irish Sea. Holyhead is the largest town, and the administrative centre is Llangefni. The county is part of the preserved county of Gwynedd.