Prusias may refer to:
People Two kings of ancient Bithynia Prusias I of Bithynia Prusias II of Bithynia
Places and jurisdictions Prusias ad Hypium, city in the Roman province of Honorias Prusias and Prusias ad Mare, former alternate names for the ancient city of Cius in Bithynia
Other Prusias (spider), a spider genus in the family Sparassidae
See also Monument of Prusias II Prusa (disambiguation) Prussia