The Dacians (ˈdeɪʃənz; Daci ˈdaːkiː; Δάκοι, Δάοι, Δάκαι) were the ancient Indo-European inhabitants of the cultural region of Dacia, located in the area near the Carpathian Mountains and west of the Black Sea. They are often considered a subgroup of the Thracians. This area includes mainly the present-day countries of Romania and Moldova, as well as parts of Ukraine, Eastern Serbia, Northern Bulgaria, Slovakia, Hungary and Southern Poland. The Dacians and the related Getae spoke the Dacian language, which has a debated relationship with the neighbouring Thracian language and may be a subgroup of it. Dacians were somewhat culturally influenced by the neighbouring Scythians and by the Celtic invaders of the 4th century BC.
Getae#Getae and Dacians
The Dacians were known as Geta (plural Getae) in Ancient Greek writings, and as Dacus (plural Daci) or Getae in Roman documents, but also as Dagae and Gaete as depicted on the late Roman map Tabula Peutingeriana. It was Herodotus who first used the ethnonym Getae in his Histories. In Greek and Latin, in the writings of Julius Caesar, Strabo, and Pliny the Elder, the people became known as 'the Dacians'. Getae and Dacians were interchangeable terms, or used with some confusion by the Greeks. Latin poets often used the name Getae. Vergil called them Getae four times, and Daci once, Lucian Getae three times and Daci twice, Horace named them Getae twice and Daci five times, while Juvenal one time Getae and two times Daci. In AD 113, Hadrian used the poetic term Getae for the Dacians. Modern historians prefer to use the name Geto-Dacians. Strabo describes the Getae and Dacians as distinct but cognate tribes. This distinction refers to the regions they occupied. Strabo and Pliny the Elder also state that Getae and Dacians spoke the same language.
By contrast, the name of Dacians, whatever the origin of the name, was used by the more western tribes who adjoined the Pannonians and therefore first became known to the Romans. According to Strabo's Geographica, the original name of the Dacians was Δάοι "Daoi".