Posidonia

Posidonia is a biennial international shipping exhibition held in Athens, Greece, first held in 1969 and staged every second June since. The 29th edition ran from 1 to 5 June 2026 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 was the largest in the event’s history. It closed with more than 35,000 visitors, 2,227 exhibiting companies from 83 countries, and a record 24 national pavilions — surpassing all prior editions in both attendance and participation. The exhibition anchors Posidonia Week, the wider programme of conferences, dinners and the Posidonia Cup regatta that assembles around it, extending back into May. Greece has the largest shipowning fleet in the world by tonnage.

The 30th edition is scheduled for June 2028.