John of Naples may refer to: People from Naples John the Deacon (Neapolitan historian), fl. 9th century Giovanni Gaderisi (cardinal), fl. 12th century John of Naples (died c. 1350), Dominican theologian Giovanni Cataldi (died c. 1465), Dominican theologian Giovanni d'Aragona (cardinal), fl. 15th century Dukes of Naples John of Conza (c. 616) John I (711–719) John II (–919) John III (928–968/969) John IV (997/999–1005) John V (1033–1050) John VI (1090–1122) Bishops of Naples John I (d. 432) John II (6th century) John III (7th century) John IV (842–849) John V (fl. 1033) John VI (fl. 1065–1071) Giovanni Orsini (1328–1359) Giovanni Bozzuto (1407–1415)