For scholars, paleo-Sardinian still presents many unanswered questions. This study illuminates for the first time the linguistic identity of the original inhabitants of the island by means of a systematic and structured analysis of field names in the archaic central area of Sardinia. Through a thorough comparison of the identified place name structures with respective lexicon entries of paleo-Basque and paleo-Iberian, the author can substantiate his hypothesis of an immigration from the ancient Iberian peninsula to Sardinia dating back to the Mesolithic period and the entire Neolithic period.