Maurice Day may refer to:
Maurice Day (bishop of Clogher) (1843–1923), Anglican bishop Maurice Day (bishop of Cashel and Waterford) (1816–1904), Church of Ireland bishop Maurice Day (dean of Waterford) (1858–1916), Irish Anglican priest Jake Day (Maurice Day, 1892–1983) American illustrator
See also Morris Day (born 1957), American musician, composer, and actor Morris Day (Viz), fictional comic character