This article aims to analyse the tsunami of 21 July 365. According to some ancient
writers, this tsunami was the most devastating natural disaster in the ancient world.
Through the analysis of literary, epigraphic and archaeological sources, combined with
the study of geological analyses, I try to understand whether this phenomenon really
had a “global” scope, i.e. whether it affected almost all the lands of the Mediterranean
basin. The debate on the power of this tidal wave has also interested many modern
scholars, who have not yet arrived at an unambiguous solution.