The German Marshall Fund of the United States invites you to nominate potential fellows from Europe, including Greece. In order to nominate an exceptional leader from your community, you can use this online form. The deadline for nominations is on Monday 29 September 2014 (5:00 pm EDT). The Hellenic Foundation for European & Foreign Policy (ELIAMEP) will be involved in the selection of Greek applicants.
You can find here more information on the Marshall Memorial Fellowships.