Avas or Avantas (Greek, modern: Άβαντας, katharevousa: Άβας, Bulgarian: Дервент, Turkish: Dervent) is a village in the southern part of the Evros regional unit, Greece. Avantas is located 10 km north of Alexandroupoli. It is on the Greek National Road 53 (Alexandroupoli - Mikro Dereio - Ormenio), between Alexandroupoli to the south and Aisymi to the north.