Costa, Cesare an Italian ecclesiastic of the latter part of the 16th century, was born at Macerata. He taught canon law at Rome, and became successively referendary apostolic and archbishop of Capula. He was sent to Venice as papal nuncio, and died at Naples, February 12, 1602, leaving several works, among which was one of considerable repute, entitled Variarum Abiguitatum Juris lib. 3 (Venice, 1588; also in Otto's Thesaur. Juris [Utrecht, 1733], volume 4). See Hoefer, Notuv. Biog. Generale, s.v.