Sebastia

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

• Sebastia, Nablus, a Palestinian village in the West Bank
• Sivas ({{langx|la|Sebasteia|link=no}}), an Ancient Roman city, now Sivas in Turkey
• Sebasteia (theme), a Byzantine province named after the city
• Malatia-Sebastia District, in Yerevan, Armenia
• Sebastia (moth), a moth genus