The Iapygians (Greek: Ἰάπυγες, translit. Iapyges; Latin: Iapygii) were an Indo-European people who inhabited Apulia in classical antiquity. They lived in the eponymous region Iapygia and were divided in three populations: the Daunians, Peucetians and Messapians. Eventually they were absorbed by the Romans.
The Iapyges have unknown origins but could have been an Illyrian tribe.
They spoke the Messapian language since the Messapians themselves were the southernmost tribe of the Iapyges. Their other tribes included the Daunians and the Peucetians.
The name Iapyges is derived from Greek authors, who linked the tribe's origin to Daedalus's son Iapyx. They were called Apuli, Salentini (or Sallentini) and Calabri by Roman authors. Iapygians were akin to the Oenotrians, an ancient Italic people who lived in the territory of Basilicata and Northern Calabria.
The genitive forms, -aihi- and -ihi- corresponding to the Sanskrit -asya- and the Greek -oio- , appear to indicate that the dialect belongs to the Indo-European family. Other indications, such as the use of the aspirated consonants and the avoiding of the letters m and t as terminal sounds, show that the Iapygian dialect was essentially different from the Italian one and corresponds in some respects to the Greek dialects.