- Italian island in the Mediterranean, south of Corsica: 9,194 sq mi (23,812 sq km)
- region of Italy, comprising this island & small nearby islands: 9,301 sq mi (24,089 sq km); cap. Cagliari
- former kingdom (1720-1860) including this region, Piedmont, Nice, Savoy (by which the kingdom was ruled), etc.
Origin of SardiniaClassical Latin from Classical Greek Sard?