The Daunians (Daúnioi; Daunii) were an Iapygian tribe that inhabited northern Apulia in classical antiquity. Two other Iapygian tribes, the Peucetians and the Messapians, inhabited central and southern Apulia respectively. All three tribes spoke the Messapic language, but had developed separate archaeological cultures by the seventh century BC.
The Daunians lived in the Daunia region, which extended from the Daunian Mountains river in the southeast to the Gargano peninsula in the northwest. This region is mostly coincident with the Province of Foggia and part of Province of Barletta-Andria-Trani today. Daunians and Oscans came into contact in northern Daunia and southern Samnite regions. Gradually, parts of northern Daunia became "Oscanized".
The ethnonym is connected to the name of the wolf, plausibly the totemic animal of this nation. The cult of the wolf was widespread in ancient Italy and was related to the Arcadian mystery cult. Daunos means wolf, according to ancient glosses, and is cognate with Greek τηαυνος (thaunos) (compare τηēριον (thērion) in the lexicon of Hesychius of Alexandria), from an Indo-European root *dhau- 'to strangle', meaning literally 'strangler'. Among the Daunian towns one may mention Lucera (Leucaria) and among other nations the ethnonym of the Lucani (Loucanoi) and that of the Hirpini, from another word meaning 'wolf'. The outcome of the Proto-Indo-European voiced aspirate *dh is proper to the Illyrian languages and so is different from the corresponding Latin faunus and Oscan, which is not attested.
At the end of the Bronze Age (11th-10th centuries BC) and during the transition to the Iron Age, Illyrian groups from the eastern Adriatic migrated to Italy. The descendants of the tribes which arrived in Apulia, collectively known as the Iapygians, were the Peucetians, Messapians and Daunians. The broader region was inhabited by Italic peoples of Southern Italy with whom the Iapygians maintained contacts; among them are the Ausones/Oscans, Sabines, Lucani, Paeligni, Bruttii, Campanians, Aequi, Samnites and Frentani.