Tepebaşı is a neighborhood in Yeşilli District, in Mardin Province, Türkiye. Tepebaşı lies in the Mardin High mountains. It has 1,246 inhabitants. The nearest city is Yalım, 8.4 km to the west. Near the border: Syria, 24 km. Among the landmarks around are Mor Hananyo Monastery (5.8 km), Mardin Museum (8.9 km) and Mardin Castle (8.6 km).