Dacia, in ancient geography the land of the Daci or Getae, was a large district of Central Europe, bounded on the north by the Carpathians, on the south by the Danube, on the west by the Tisa (Tisza river, in Hungary), on the east by the Tyras (Dniester or Nistru, now in eastern Moldova). It thus corresponds in the main to modern Romania and Moldova. The capital of Dacia was Sarmisegetusa.
The inhabitants of this district are considered as belonging to the Thracian stock. The Dacians were known as Geton (plural Getae) in Greek writings, and as Dacus (plural Daci) and Getae in Roman documents; also as Dagae and Gaete — see the late Roman map Tabula Peutingeriana. Ancient writers are unanimous in considering the Getae the same as the Daci.