Attending Heads of State and Government
| Country | Leader | Notes |
|---|---|---|
| Greece | Prime Minister Kyriakos Mitsotakis | Government confirmed travel to Odessa for the summit. |
| Croatia | Prime Minister Andrej Plenković | Fourth wartime visit; Zagreb’s aid to Kyiv totals €315 m and support for 30,000 Ukrainian refugees. |
| Montenegro | President Jakov Milatović | Arrived at Ukraine’s invitation. |
| Romania | President Nicusor Dan | First visit to Ukraine since election. |
| Serbia | President Aleksandar Vučić | Marks his inaugural trip to Ukraine; seen as diplomatically significant. |
| Moldova (expected) | President Maia Sandu | — |
| Bulgaria (expected) | Prime Minister Rosen Zhelyazkov | — |
The Odessa gathering is the fourth in the Ukraine–South-Eastern Europe summit series. Delegates will discuss security, regional cooperation, and support for Kyiv amid Russia’s ongoing invasion.
