San Giovanni Suergiu () is a town and comune (municipality) in the Province of Sulcis Iglesiente in the autonomous island region of Sardinia in Italy, located about west of Cagliari, and about south of Carbonia. It has 5,523 inhabitants.
San Giovanni Suergiu borders the municipalities of Carbonia, Giba, Portoscuso, Sant'Antioco, and Tratalias.
Demographics As of 2026, the population is 5,523, of which 50.0% are male, and 50.0% are female. Minors make up 10.9% of the population, and seniors make up 33.1%.
Immigration As of 2025, immigrants make up 2.4% of the total population. The 5 largest foreign countries of birth are France, Germany, Morocco, Romania, and Switzerland.
Main sights
Church of St. Mary of Palmas, in Pisan-Romanesque style (12th century) Church of St. John the Baptist (14th century) Remains of the Castle of Palmas (11th century) Necropolis of Is Locci-Santus, belonging to the Ozieri culture and including 13 domus de janas Several nuraghe and the giants' grave of Craminalana Natural preserve of Punt'e Trettu
References