- Ministry of Economy and Finance
- Ministry of Foreign Affairs
- Ministry of National Defence
- Ministry of the Interior
- Ministry of Education, Religious Affairs and Sport
- Ministry of Health
- Ministry of the Citizen Protection
- Ministry of Infrastructure and Transportation
- Ministry of Environment and Energy
- Ministry of Development
- Ministry of Labour and Social Security
- Ministry of Justice
- Ministry of Culture
- Ministry of Migration and Asylum
- Ministry of Social Cohesion and Family Affairs
- Ministry of Rural Development and Food
- Ministry of Marine Affairs & Insular Policy
- Ministry of Tourism
- Ministry of Digital Governance
- Ministry of Climate Crisis and Civil Protection
- Independent Authority for Public Revenue (IAPR)
- Supreme Council for Civil Personnel Selection (ASEP)
- Hellenic Authority for Communication Security and Privacy (ADAE)
- Authority For The Examination Of Preliminary Appeals
- Hellenic Civil Aviation Authority (HCAA)
- Hellenic Data Protection Authority
- National Actuarial Authority (NAA)
- National Transparency Authority
- Hellenic Authority for Higher Education
- Greek National Authority of Assisted Reproduction
- Greek Financial Intelligence Unit
- Hellenic Telecommunications & Post Commission
- Hellenic Council for Public Health
- National Council for Radio and Television (NCRTV)
- Hellenic Statistical Authority (ELSTAT)
- Hellenic Fiscal Council
- Hellenic Single Public Procurement Authority (HSPPA)
- Hellenic Labour Inspectorate
- Hellenic Competition Commission (HCC)
- Hellenic Gaming Commission (HGC)
- e-EFKA Property Company S.A. – Property Management & Development for the Real Estate portfolio of e-EFKA (National Social Security Fund of Greece)
- Regulatory Authority for Energy, Waste and Water (RAAEY)
- Regulatory Authority for Ports
- Regulatory Authority for Railways (RAS)
- Consumer’s Ombudsman
- The Greek Ombudsman
- European Parliament
- European Council
- Council of the European Union
- European Commission
- Court of Justice of the European Union (CJEU)
- European Central Bank
- European Court of Auditors
- United Nations
- Organisation for Economic Co-operation and Development (OECD)
- Council of Europe
- The European Judicial Network in criminal matters (EJN criminal)
