Dacia (, DAY-shə; Latin: [ˈd̪aːkija]) was the land inhabited by the Dacians. The Greeks referred to them as the Getae (east of Dacia) and the Romans called them Daci.
Dacia was bounded in the south approximately by the Danubius river (Danube), in Greek sources the Istros, or at its greatest extent, by the Haemus Mons. Lower Moesia (Dobruja), a region south-east of the Danube, was a core area where the Getae lived and interacted with the Ancient Greeks. In the east it was bounded by the Pontus Euxinus (Black Sea) and the river Danubius, in Greek sources the Tyras. But several Dacian settlements are recorded between the rivers Dniester and Hypanis (Southern Bug), and the Tisia (Tisza) to the west.
At times Dacia included areas between the Tisa and the Middle Danube. The Carpathian Mountains are located in the middle of Dacia.