Knowledge about glass trading in protohistoric Southern Italy has been limited by the few archeometrical data available to date, which prevented a comparison between the well-known Northern trend. The aims of this work is, therefore, to fill the gap in data relative to the Bronze-Iron Ages Southern vitreous items, in order to make possible a general overview of the protohistoric Italian glassy supply routes. The paper presents physical-chemical data of sixty-one vitreous items coming from eleven Southern Italian sites, dated from the beginning of the Bronze Age up to the Archaic period (22 th-6 th century BC), ensuring a complete diachronic analysis. SEM-EDS, EMPA, LA-ICPMS and XRD analyses allowed the definition of raw materials and manufacturing techniques employed, and also the determination of the items provenance. The sample set shows a great variability of glass chemical types, being composed by plant ash glass, mixed alkali and natron samples. A complex picture, mostly related to the different natron glass typologies (High-Zr, Low-Zr, Black,…) and their fast technological evolution in the early 1 st millennium BC, emerges. Taking into account the data reported in this study and those available in literature relative both to Northern and Southern Italian Bronze-Iron Ages items, this work demonstrates, for the first time, the existence of different trade routes. This is especially true for the early periods-Early/Middle Bronze Ages, whit Northern Italy involved in the trades with Central Europe, while South already inserted in the Mediterranean interactions.