Maurice FitzGerald Day (20 May 1816 – 13 December 1904) was a Church of Ireland bishop in the last quarter of the 19th century.
Day, rector of Kiltallagh, and his wife Arabella, daughter of Sir William Godfrey.
[3] He was educated at Clonmel Endowed School and Trinity College, Dublin[4] and ordained in 1840.
He established and was the incumbent of St. Matthais' Church, Hatch Street, Dublin from 1843 to 1868[5] when he became Dean of Limerick.
[6] He was Bishop of Cashel, Emly, Waterford and Lismore from 1872[7] until his retirement in 1899.