Sebastia

Sebastia (Sebastea, Sebasteia; Greek Σεβαστεία) can refer to:

• the former name of the modern city of Sivas, Turkey (renamed from "Megalopolis" under Augustus)
• Sebasteia (theme), Byzantine province named after the former
• Samaria (ancient city), renamed Sebastia by Augustus
• Sebastia, Nablus, a present-day village in the West Bank located directly adjacent to the ruins of ancient Samaria-Sebaste
• Sebastia (moth), a moth genus