Terracini is a surname. It is the surname of: (1889–1968), Italian mathematician Catherine Terracini (born c. 1982), Italian-born Australian actress, daughter of Lyndon Lyndon Terracini (born 1950), Australian opera singer and director, brother of Paul Paul Terracini (born 1957), Australian composer and conductor Roberto Terracini (born 1900), Italian sculptor Susanna Terracini (born 1963), English-born Italian mathematician Umberto Terracini (1895–1983), president of the Constituent Assembly of Italy