Sixteen Hellenistic stelae from the central and upper Adriatic region have been examined minero-petrographically and isotopically in order to determine the provenance of their constituent materials. On stylistic and epigraphic grounds all the stelae date from the third to first century bc and have been related by archaeologists to Greek Delian workshops and/or to local Adriatic ateliers. Laboratory analyses showed a local provenance for the limestone stele (Mount Conero, Ancona), the prevailing use of Parian marble from Lakkoi (10 out of 15 stelae) and the minor exploitation of three other marbles (Lunense from Carrara, Proconnesian from the island of Marmara, and Lesbian from Moria). The results confirm contacts between the Adriatic and central Aegean areas in the Hellenistic period, indicating more than one possible origin for the marble stelae: they may have been imported as finished pieces from the Aegean-Attic region, and/or worked locally — imitating the ‘Greek style’ – from small blocks of marble imported from Greece. In addition, the results provide new evidence for the use of Italic marble from Carrara.