Olbia is a city in Sardinia, Italy.
Olbia may also refer to:
Places Astacus (Bithynia) or Olbia, an ancient city in present-day Anatolia, Turkey Olbia (Cilicia), an ancient town in present-day Anatolia, Turkey Olbia (Egypt), an ancient city later called Arsinoe Olbia (Pamphylia), an ancient town in present-day Anatolia, Turkey Olbia, Libya, a Roman/Byzantine town Olbia, or Nicomedia, now İzmit in Anatolia, Turkey Pontic Olbia, or Olbia, ancient city and archaeological site in Ukraine Olbia, a Hellenic settlement in Hyères, France
Other uses Olbia Calcio 1905, or Olbia, Sardinian football club Olbia (bug), a genus in the family Pentatomidae
See also Olba (disambiguation) Province of Olbia-Tempio, a former province in Sardinia, Italy