Posidonia

Posidonia is a biennial international shipping exhibition held in Athens, Greece, first held in 1969 and staged every second June since. The 30th edition is scheduled for 5 to 9 June 2028 at the Metropolitan Expo in Pallini, organised by Posidonia Exhibitions SA under the auspices of the Union of Greek Shipowners, the Hellenic Chamber of Shipping and the Ministry of Maritime Affairs and Insular Policy.

The 29th edition, held from 1 to 5 June 2026, drew more than 35,000 visitors and 2,200 exhibiting companies, both records for the event and for trade gatherings in Greece. The exhibition anchors Posidonia Week, the wider programme of conferences, dinners and the Posidonia Cup regatta that assembles around it. Greece has the largest shipowning fleet in the world by tonnage.