List of Member States

1. Albania
2. Algeria
3. Armenia
4. Austria
5. Belgium
6. Bosnia and Herzegovina
7. Bulgaria
8. Croatia
9. Czech Republic
10. Denmark
11. Estonia
12. Finland
13. France
14. Germany
15. Georgia [01.05.2012]
16. Greece
17. Hungary
18. Iran
19. Iraq *)
20. Ireland
21. Italy
22. Latvia
23. Lebanon *)
24. Liechtenstein
25. Lithuania
26. Luxembourg
27. Former Yugoslav Republic of Macedonia
28. Monaco
29. Montenegro
30. Morocco
31. Netherlands
32. Norway
33. Poland
34. Portugal
35. Romania
36. Russia
37. Serbia
38. Slovakia
39. Slovenia
40. Spain
41. Sweden
42. Switzerland
43. Syria
44. Tunisia
45. Turkey
46. Ukraine
47. United Kingdom 

Associate Member States

   48.  Jordan

Regional economic integration organisations

European Union

*)
Membership suspended until international rail traffic is restored (decision of the 4th General Assembly, Athens, 8-11.9.1997).