St Rhwydrys's Church is a medieval church near the village of Cemlyn on the Isle of Anglesey in Wales.

It was designated a Grade II*-listed building on 12 May 1970.

Dedicated to Saint Rhwydrys, the church is situated in an isolated location near Cemlyn.

The oldest part of the structure dates from the 12th century, which consists of the nave and rounded doorway.

It was granted Grade II*-listed status on 12 May 1970.