Llaniestyn

St Iestyn's Church, Llaniestyn is a medieval church in Llaniestyn, Anglesey, in Wales. A church is said to have been founded here by St Iestyn in the 7th century, with the earliest parts of the present building dating from the 12th century. The church was extended in the 14th century, with further changes over the coming years. It contains a 12th-century font and a 14th-century memorial stone to Iestyn, from the same workshop as the stone to St Pabo at St Pabo's Church, Llanbabo.

The church is still in use, as part of the Church in Wales, and is one of seven churches in a combined parish. It is a Grade II* listed building, a national designation given to "particularly important buildings of more than special interest", because of its age and retention of many original features, including the Iestyn effigy.