Former countries on the Italian Peninsula – a list in plain text you can copy and paste:
- Acaya
- Republic of Alba
- Duchy of Alvito
- Anconine Republic
- Auriate
- Duchy of Benevento
- Republic of Bergamo
- Prince-Bishopric of Brixen
- Principality of Capua
- Duchy of Castro
- Catepanate of Italy
- Marquisate of Ceva
- Cisalpine Republic
- Cispadane Republic
- Corsican Republic
- Republic of Cospaia
- Cottii Regnum
- County of Arona
- Duchy of Amalfi
- Etruria
- Marquisate of Finale
- Duchy of Florence
- Duchy of Friuli
- Patria del Friuli
- Duchy of Gaeta
- Golden Ambrosian Republic
- Grand Duchy of Tuscany
- County of Guastalla
- Italian Republic
- Italian Social Republic
- Italian United Provinces
- Kingdom of Italy
- Kingdom of Italy
- Kingdom of Sicily
- Ligurian Republic
- Longobardia
- Lordship of Carrara
- Loritello
- Lucania
- Republic of Lucca
- Duchy of Massa and Carrara
- Duchy of Mirandola
- Duchy of Modena and Reggio
- County of Modica
- County of Montechiarugolo
- March of Montferrat
- Kingdom of Naples
- Duchy of Naples
- Neapolitan Republic
- County of Novellara and Bagnolo
- Ostrogothic Kingdom
- Parthenopean Republic
- Republic of Pisa
- State of the Presidi
- Exarchate of Ravenna
- Duchy of Reggio
- Republic of Ancona
- Republic of Massa
- Roman Empire
- Western Roman Empire
- Roman Republic
- Roman Republic
- Principality of Salerno
- County of Santa Fiora
- Sardinian medieval kingdoms
- Senarica
- Republic of Siena
- Duchy of Sora
- Duchy of Sorrento
- Sovana
- Principality of Taranto
- Terra Sancti Benedicti
- Tiberina Republic
- Transpadane Republic
- United Provinces of Central Italy
- Venetian Province
- Republic of Venice