Slovenian Institutions
- Agencija Republike Slovenije za javnopravne evidence in storitve
- National Assembly
- European Consumer Center
- Information Commissioner
- Slovenian Competition Protection Agency
- Public Agency of the Republic of Slovenia for Railway Transport
- Media Watch of Peace Institute
- Ministry of Public Administration
- Ministrstry of Culture
- Ministrstry of Infrastructure
- Razvid medijev
- Slovenian Institute of Quality and Metrology
- Slovenian Institutre for Standardization
- Slovenska oglaševalska zbornica
- Statistical Office
- Svet za radiodifuzijo
- Svet za elektronske komunikacije
- Market Inspectorate
- Institute of Macroeconomic Analysis and Development
- Varuhinja pravic gledalcev in poslušalcev pri RTV Slovenija
- Zveza potrošnikov Slovenije
International Institutions
- Body of European Regulators for Electronic Communications
- British Board of Film Classification
- Central European Regulatory Forum
- Community of European Railway
- DG-MOVE
- EuroLex
- European platform of regulatory authorities
- European Railway Agency (ERA)
- European Rail Infrastructure Managers (EIM)
- Evropean Commision
- European Conference of Postal and Telecommunications Administrations (CEPT)
- European Commitee for Postal Regulation (CERP)
- European Emergency Number Association (EENA)
- The European Regulators Group for Postal Services (ERGP)
- European Commitee for Standardization - CEN/TC 331
- European Regulators Group for Audiovisual Media Services (ERGA)
- EUROSTAT
- The Directorate‑General for Communications Networks, Content and Technology
- Independent Regulators' Group - Rail (IRG-Rail)
- International Telecommunication Union (ITU)
- Netherlands Institute for the Classification of Audio-visual Media - Kijkwijzer
- Independent Regulators Group IRG
- Board of European Commitee for Communications (COCOM)
- Organisation for Economic Co-operation and Development (OECD)
- Rail Net Europe
- Universal Postal Union(UPU)
- PostEurop