Monasteranenagh Abbey is a medieval friary and national monument located in County Limerick, Ireland.

[3] Monasteranenagh Abbey is located 3.7 km (2.3 mi) east of Croom, on the north bank of the River Camogue.

This monastery was founded in 1148 by Toirdelbhach mac Diarmaida Ua Briain for Cistercians from Mellifont.

"[4][5] The buildings were possibly completed by Domnall Mór Ua Briain in the late 12th century.

Sir Nicholas Malby, for the English, routed Sir John of Desmond and turned his cannon on the Abbey where some of the Irish had sought shelter: the cloister and refectory were practically destroyed and the whole of the surviving monastic community were massacred.