Mount Melleray Abbey (Irish: Mainistir Cnoc Mheilearaí) is a Trappist monastery in Ireland, founded in 1833.

Following the suppression of monasteries in France after the French Revolution, dispossessed monks had arrived in England in 1794 and established a monastic community in Lulworth, Dorset.

[3] During the July Revolution of 1830, the monks were again persecuted and the French abbot of Melleray sent Waterford-born Vincent Ryan to found an abbey in Ireland.

[5] On the feast of St Bernard, 1833, the foundation stone of the new monastery was blessed by William Abraham, Bishop of Waterford and Lismore.

During his July 1849 visit to neighbouring Dromana House, Scottish essayist Thomas Carlyle paid a visit to Mount Melleray and described the abbey in some detail, noting particularly the huge vats of "stirabout" or porridge the monks prepared for a large number of famine refugees that waited for food at the entrance to the monastery: "Entrance; squalid hordes of beggars, sit waiting" and "nasty tubs of cold stirabout (coarsest I ever saw) for beggars"(p. 90).

He notes that the monastery "must have accumulated several thousand pounds of property in these seventeen ... years, in spite of its continual charities to beggars.

[8][9] Fitzpatrick died 4 December 1893, and was succeeded by Carthage Delaney, who was blessed 15 January 1894, and presided over Mount Melleray for thirteen years.

O'Phelan resumed building on the abbey, buying the great cut limestone blocks from Mitchelstown Castle (28 miles west), which had been looted and burnt by the IRA in 1922.

It is famous in literature due to Seán Ó Ríordáin's poem Cnoc Mellerí in Eireaball Spideoige (1952).