Demaria, Demaría, DeMaría, or DeMaria is a surname. Notable people with the surname include:
Anthony J. DeMaria (1931–2025), American optical physicist and laser researcher Attilio Demaría (1909–1990), Italian Argentine footballer Chris Demaria (born 1980), American baseball player David DeMaría (born 1976), Spanish singer and songwriter Félix Demaría (born 1912), Argentine professional footballer Fernando Demaría (born 1928), Argentine poet, philosopher and classical scholar Michael DeMaria (born 1962) American psychologist, author, and musician Peter DeMaria (born 1960), American architect Tatiana DeMaria (born ?), British songwriter, singer, multi-instrumentalist, record producer, and entrepreneur Vincenzo DeMaria (born 1954), Italian-Canadian businessman and alleged mobster Yves Demaria (born 1972), French former professional motocross racer
See also Demaria (disambiguation) De Maria