Llangristiolus is a village and community in the middle of Anglesey, Wales, southwest of Llangefni, and is named after Saint Cristiolus.

The River Cefni flows through the village.

The village of Rhostrehwfa is in the community.

The church of St Cristiolus, Llangristiolus, dates from the 12th century.

This Anglesey location article is a stub.