d'Ornano is a surname. Notable people with the surname include:
Anne d'Ornano (born 1936), French politician Camille d'Ornano (1917–1987), French lieutenant colonel and colonial administrator Guillaume d'Ornano (1894–1985), French businessman Hubert d'Ornano (1926–2015), French businessman Jean-Baptiste d'Ornano (1581–1626), French aristocrat Michel d'Ornano (1924–1991), French politician Mireille d'Ornano (born 1951), French politician Philippe Antoine d'Ornano (1784–1863), French soldier and politician Rodolphe-Auguste d'Ornano (1817–1865), French politician