| Balkan Green Network (BGN) | BGN | Kosovo | WB |
| BioNET | | Serbia | SEE |
| Black Sea NGO Network | BSNN | Bulgaria | Bulgaria, Georgia, Romania, Russia, Turkey and Ukraine |
| CEEweb for Biodiversity | CEEweb | Hungary | Albania, BIH, Czech Republic, Hungary, Moldova, Poland, Slovakia, Austria, Bulgaria, Estonia, Latvia, Montenegro, Romania, Slovenia Belarus, Croatia, Germany, Lithuania North Macedonia, Serbia, Ukraine |
| CNVP | | Netherlands | Albania, Kosovo, North Macedonia, Montenegro, Serbia and Bosnia-Herzegovina |
| GEAR – Green Economy for Advanced Region | GEAR | BiH | Montenegro, Albania, BiH, Serbia, North Macedonia |
| Green Agenda Network | | North Macedonia | Regional |
| Regional Centre for Forestry and Rural Development (REFORD) | REFORD | | Slovenia, Montenegro, Croatia, Albania, BiH, North Macedonia, Kosovo, Bulgaria |
| Save the Blue Heart of Europe | | Germany, Austria | Albania, BiH, North Macedonia, Serbia |
| SEE Network on Energy and Transport | SEENET | | SEE |
| Network for Banning and Phasing out Asbestos in Western Balkan Countries | KAPAZ | | WB |
