formerly Terranova Pausania
Town (pop., 2001 prelim.: 40,746), northeastern Sardinia , Italy.
Originally a Greek colony, it passed to the Romans and was the site of a Roman victory over the Carthaginian general Hanno in 259 BC. It was rebuilt by Pisan colonists in 1198 and named Terranova Pausania. Renamed Olbia in 1939, it is the main passenger port for connections with the Italian mainland. It has Phoenician and Roman ruins.