Scarr is a Hewitt of 640 m in Wicklow. All four of its nearest neighbours are higher, up to Mullaghcleevaun at 846.7 m.
It sits below Tonelagee, only 4.8 km to the west and 175.8 m higher. It is the lowest of the five register hills in the Wicklow Hills N region, where Mullaghcleevaun is highest. Its nearest higher summit, Tonelagee NE Top (667 m, 3.8 km west), is a listed top not profiled here.