COST Countries (23):

Austria, Belgium, Bosnia and Herzegovina, Bulgaria, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Luxembourg, Malta, Netherlands, Norway, Portugal, Romania, Serbia, Slovenia, Spain, Switzerland, Turkey, United Kingdom.

COST Near Neighbour Countries (1):

Russia

COST International Partner Countries (3):

Brazil, Japan, New Zealand

More about GREEKC COST Parties, here.