| AEC |
European Association of Railway Personnel |
| CER |
The Community of European Railway and Infrastructure Companies |
| CIT |
International Railway Transport Committee |
| COLPOFER |
Collaboration of Railway Police and Security Services |
| ERA |
European Railway Agency |
| FEDECRAIL |
European Federation of Museum and Tourist Railways |
| OSJD |
Organization for Cooperation of Railways |
| UIC |
International Union of Railways |
| RFC8 |
Rail Freight Corridor North Sea-Baltic (Co-financed by Connecting Europe Facility of the European Union) |
