Samosata (/səˈmɑːsətə/; Armenian: Շամուշատ, Ancient Greek: Σαμόσατα Samósata, Syriac: ܫܡܝܫܛ‎ šmīšaṭ) was an ancient city on the right (west) bank of the Euphrates, whose ruins exist at the previous location of the modern city of Samsat, Adıyaman Province, Turkey but are no longer accessible as the site was flooded by the newly constructed Atatürk Dam. Even though the city had a predominantly Syriac-speaking population, Hellenistic culture played an important role there. The city is sometimes confused with Arsamosata.