John of Salerno

John of Salerno (Giovanni da Salerno) may refer to
 * John I of Salerno (died 1007), prince of Salerno (981–983) and duke of Amalfi (1004–1007)
 * John II of Salerno (died 994), prince of Salerno (983–994)
 * John of Ajello or John of Salerno (died 1169), Bishop of Catania (1167–1169)
 * John of Salerno (cardinal), diplomat and Cardinal-priest of Santo Stefano al Monte Celio (1190–1208)
 * John of Salerno (Dominican) (1190–1242), monk beatified in 1783