Three Seas Summit Vilnius 2024


11 APRIL 2024


Welcome to the Three Seas Initiative (3SI) – a politically inspired, commercially driven platform for improving connectivity between thirteen EU Member States allocated between Baltic, Adriatic and Black seas.

The Three Seas Initiative was born out of a shared interest in developing transport, energy and digital infrastructure connections on the EU’s north-south axis. Connections that must be trusted, sustainable and inclusive thus strengthening EU cohesion and enrich transatlantic links. 3SI aims to scale up region’s excellence EU-wide and globally. 3SI partners – the United States, Germany, and the European Commission – are closely involved in this process.

To improve regions connectivity and accelerate investments in infrastructure projects of the regions 3SI Investment Fund was set up in 2019. To know more about the 3SI projects we invite you to navigate through the list of priority projects.

After Russia launched its unprovoked and unlawful war against Ukraine, the geopolitical importance of intensified cooperation and better connectivity in the North-South axis corridor has increased dramatically. The Three Seas Initiative (3SI) serves as a political platform to facilitate this cooperation to build stronger connections in the areas of transport, energy, military mobility, and digitalization within the Three Seas region and beyond – with our regional and transatlantic partners. I look forward to welcoming all the partners in Lithuania for the 9th 3SI Summit and Business Forum in April this year.  The Three Seas Initiative – for a better-connected, stronger Europe and a closer transatlantic partnership!
Gitanas Nausėda President of Lithuania

The Three Seas is an initiative of unity

Every year it brings together 13 countries located between the Baltic, Black, and Adriatic seas – Estonia, Latvia, Lithuania, Poland, the Czech Republic, Slovakia, Hungary, Slovenia, Austria, Croatia, Romania, Greece and Bulgaria.


The Three Seas initiative aims to promote cooperation, first and foremost, for the development of infrastructure in the energy, transport, and digital sectors. It targets new investments, economic growth, and energy security.

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Three Seas Story

The cornerstone of Three Seas was laid down in 2015. Today, the initiative comprises of an annual summit held at the presidential level, a business forum, and an international investment fund for the financing of infrastructure projects.

Investment Fund

The Three Seas Initiative Investment Fund is a dedicated commercial fund targeting critical infrastructure investment in the region. The fund is advised by Amber Infrastructure Group, an independent specialist international investment manager.


Three Seas Initiative Summit in Vilnius

On Thursday, President Gitanas Nausėda chaired the plenary session of the ninth summit of the Three Seas Initiative (3SI) in Vilnius.

Joint Declaration of the Ninth Summit of the Three Seas Initiative
We, the Presidents and high-level representatives of 13 Member States of the European Union, the participating states – the Republic of Austria, the Republic of Bulgaria, the Republic of Croatia, the Czech Republic, the Republic of Estonia, the Hellenic Republic, Hungary, the Republic of Latvia, the Republic of Lithuania, the Republic of Poland, Romania, the Slovak Republic, the Republic of Slovenia – of the Three Seas Initiative (3SI), met in Vilnius, Lithuania, on 11 April 2024 on the occasion of the Ninth 3SI Summit and the Sixth 3SI Business Forum.