St Cynfarwy's Church, Llechgynfarwy

St Cynfarwy's Church is a medieval parish church in Llechgynfarwy, Anglesey, north Wales. The first church in the vicinity was established by St Cynfarwy (a 7th-century saint about whom little is known) in about 630, but no structure from that time survives. The present building contains a 12th-century baptismal font, indicating the presence of a church at that time, although extensive rebuilding in 1867 removed the datable features of the previous edifice.

It is a Grade II listed building, a national designation given to "buildings of special interest, which warrant every effort being made to preserve them", in particular because it is "a simple, rural church of Medieval origins". The church is still used for worship by the Church in Wales, one of nine in a combined parish, although there has not been an incumbent priest since September 2009.