This contribution focuses on the physico-chemical analyses carried out on a group of “Ionian cups” uncovered at the sanctuary of Artemis in Thasos, Northern Greece. These drinking vessels, widespread throughout all the Mediterranean and the Black Sea during the 7th and 6th centuries BCE, are known to have been primarily manufactured in workshops located in north and south Ionia. However, recent studies undertaken on “Ionian cups” found in Sicily and the Western Mediterranean have shown the existence of regional workshops emulating the shape and ornamentation of some of the series known in the Eastern Mediterranean. The macroscopic study performed on the Thasian assemblage has revealed the presence of several clay groups that points towards the participation of numerous workshops in the production and circulation of these cups in the North Aegean. A WD-XRF program conducted on 92 samples coming from every clay group observed visually aimed to characterize the elemental composition of the clay fabrics, quantify the number of workshops represented among the finds and determine their origin through comparisons made with the geochemical database of the Laboratoire de Céramologie de Lyon. The results have allowed us to distinguish five main groups: three being south Ionian, one north Ionian or Aeolian and one most likely local or regional. This project represents the first attempt to identify “Ionian cups” workshops in the North Aegean and to document facets of the exchange networks put in place between Asia Minor and the Thraco-Macedonian coast during the 7th and 6th centuries BCE. A SEM-EDX analysis project carried out on the outer slip of twenty cups has also revealed a common use of Iron-rich clay in the composition of the ornamentation suggesting common craft techniques among the different identified workshops.Read less <