Merv (Turkmen:Merw, Persian:مرو, Marv), formerly Achaemenid Satrapy of Margiana, and later Alexandria (Ἀλεξάνδρεια) and Antiochia in Margiana (Greek:Ἀντιόχεια τῆς Μαργιανῆς), was a major oasis-city in Central Asia, on the historical Silk Road, located near today's Mary in Turkmenistan.