McIlvaine is a surname of Scottish origin. Notable people with the surname include:
Abraham Robinson McIlvaine (1804–1863), American politician, U.S. congressman from Pennsylvania Robinson McIlvaine (1913–2001), US diplomat Charles McIlvaine (mycologist) (1840–1909), American author and mycologist Charles Pettit McIlvaine (1799–1873), American Episcopalian bishop and author Jim McIlvaine (born 1972), American basketball player Joseph McIlvaine (1769–1826), American politician, U.S. senator from New Jersey Maria McIlvaine Gillmore (born Maria McIlvaine; 1871–1965), American writer and missionary Theodore Clinton McIlvaine (1875–1959), American agronomist Thomas McIlvaine (1854–1933), American illustrator
See also McIlvain