Smaller differences found in the archaeological material of narrower regions in Liburnia are in a certain measure reflected also in these scarce linguistic remains.

These are insufficient for a precise linguistic classification, other than a general indication that they have an Indo-European basis, but also may incorporate significant elements from Pre-Indo-European languages.

[1][2][3] Following studies of the onomastics of the Roman province of Dalmatia, Géza Alföldy has suggested that the Liburni and Histri belonged to the Venetic language area.

[4][5] In particular, some Liburnian anthroponyms show strong Venetic affinities, a few similar names and common roots, such as Vols-, Volt-, and Host- (< PIE *ghos-ti- 'stranger, guest, host').

According to R. Katičić, Liburnian toponyms, in both structure and form, also demonstrate diverse influences, including Pre-Indo-European, Indo-European and other, purely local features.

Among the personal names of the so-called 'Liburnian' area are Aetor, Ceunus, Cliticus, Curticus, Dmocus, Lambicus, Oplus, Raecus, Suioca, Turus, Vadica, Verica, Viniocus, Volso, Voltimesis, Voltissa, and Zupricus.

The following names are judged to be exclusively Liburnian, yet one (Buzetius) is also attested among the neighboring Iapodes to the north and northeast: Among the theonyms of the so-called 'Liburnian' area are female deities Iutossica, Latra and Sentona.