Raheen-a-Cluig is a medieval church and National Monument in Bray, County Wicklow, Ireland.

[2] Raheen-a-Cluig lies on the north face of Bray Head in Raheen Park, about 300 m (330 yd) south of the beach, with a commanding view over the coastline.

Ráithín can also refer to a wall of built-up sods of turf, or it could be a version of raithean, "ferny area".

The ruins have a doorway in the northeast wall which would have originally held a strong timber door, and round-headed windows in the east and west gables.

There were two smaller buildings close by and so is an enclosure: probably a cillín: a burial ground for suicides, shipwrecked sailors, strangers, unrepentant murderers and unbaptised babies.