St Ceidio's Church, Rhodogeidio is a rural 19th-century church near Llannerch-y-medd, in Anglesey, north Wales. It was built using materials from the 14th-century church that previously stood on the site, which has been used for Christian worship since some time in the 7th century. The present building, which contains an east window dating from the 14th century and a 15th-century font, is no longer used for services, but has been looked after by local people.