The Paleo-Balkan languages are a geographical grouping of various Indo-European languages that were spoken in the Balkans and surrounding areas in ancient times. In antiquity, Dacian, Greek, Illyrian, Messapic, Paeonian, Phrygian and Thracian were the Paleo-Balkan languages which were attested in literature. They may have included other unattested languages.

Paleo-Balkan studies are obscured by the scarce attestation