| Baltic 21 | SE | |
| The Association of Castles and Museums around the Baltic Sea | FI | |
| Coalition Clean Baltic | SE | |
| Union of the Baltic Cities, Commission on Tourism | PL |
| Federal Office for Buidling and Regional Planning, Germany | DE | |
| Federal Ministry for the Environment, Nature Conservation and Nuclear Safety | DE | |
| Ministry of Economics, Labour and Tourism of the Land Mecklenburg-Vorpommern | DE | |
| Ministry of Economics of the Republic of Latvia | LV | |
| Ministry of the Environment of the Republic of Latvia | LV | |
| University of Szczecin | PL |
| Ministery of Economics of Kaliningrad Regional Development, Tourism Department | RU | |
| Administration of Municipal Formation Zelenogradsk Urban District | RU | |
| Immanuel Kant Baltic Federal University, Kaliningrad | RU | |
| Direction of the National Park Curonian Spit | RU |
