St Beuno's Church is a place of worship located in the village of Clynnog Fawr, Gwynedd, Wales.

Beuno was a seventh-century Welsh abbot who founded a clas on the site of the present church and was later buried there.

The north porch was probably built shortly after the nave, and the vestry, west tower, and St Beuno's chapel probably date from the early sixteenth century.

The passage between the tower and chapel probably dates from the early seventeenth century.

It consists of a rectangular pool enclosed by a roughly dressed stone wall.