Mullaghcleevaun is a Hewitt of 846.7 m in Wicklow. Only seven of the register's Ireland hills are higher.
In the database's Wicklow Hills N region it is the highest of five register hills, above Tonelagee and three others. It overtops all four of its nearest neighbours; the tallest of them, Tonelagee, reaches 815.8 m. Of the register hills in Wicklow, only Lugnaquillia Mountain stands higher. The higher hill nearest to it, Lugnaquillia Mountain, is a 3,000 ft mountain, 15.7 km to the south. The summit is marked by a trig point.
