Cemaes () is a village on the north coast of Anglesey in Wales, sited on Cemaes Bay, an Area of Outstanding Natural Beauty which is partly owned by the National Trust. It is the most northerly village in Wales (excluding the nearby hamlet of Llanbadrig). The name Cemaes derives from the Welsh word "cemais", meaning "bend or loop in a river, inlet of sea, bay". In 2011 the population of Cemaes in Llanbadrig community was 1,357. The most northerly point in Wales, Ynys Badrig, is nearby.