Marlay is a surname. Notable people with the name include:
Charles Brinsley Marlay (1831–1912), Anglo-Irish landowner and art collector George Marlay (1691–1763), Anglo-Irish Anglican priest, Bishop of Dromore John Marlay (businessman), chairman of Cardno Limited John Marlay (MP) (1590–1673), English merchant, military commander and politician Richard Marlay, Dean of Ferns (1769–1787), Bishop of Clonfert and Kilmacduagh (1787–1795) Thomas Marlay (British Army officer) (1719–1784), Irish soldier Thomas Marlay (judge) (1680–1756), Irish politician and Lord Chief Justice of Ireland
See also Marlay Grange, residence of the British Ambassador to Ireland Mount Marlay, mountain in the Southern Downs Region, Queensland, Australia Marlay Park, suburban public park in Rathfarnham in Dún Laoghaire–Rathdown, Ireland