Merv (Turkmen: Merw, Persian: مرو‎ Marw), 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.