- Academy of Athens
- Aegean University
- Agricultural University of Athens
- Aquaculture Centre of Acheloos S.A. (ICHTHICA)
- Aristotle University of Thessaloniki
- Athena – Research and Innovation Center in Information Communication and Knowledge Technologies
- Athens School of Fine Arts (ASFA)
- Athens University of Economics & Business
- Biomedical Sciences Research Center “Alexander Fleming”
- Centre for Renewable Energy Sources (CRES)
- Centre for Research and Technology (C.E.R.T.H.)
- Foundation for Research and Technology (FORTH)
- General Secretariat of Research and Technology – Ministry of Education
- Harokopio University
- Hellenic Centre for Marine Research (HCMR)
- Hellenic Mediterranean University
- Hellenic Open University
- Hellenic Parliament Library
- Hellenic PASTEUR Institute
- Institute of Educational Policy
- International Hellenic University
- Ionion University
- National Agricultural Research Foundation (NAGREF)
- National Centre for Scientific Research “Demokritos” – Greek Atomic Energy Commission
- National Centre for Social Research (EKKE)
- National Documentation Centre
- National Hellenic Research Foundation
- National Library of Greece
- National Observatory of Athens
- National Technical University of Athens (NTUA)
- Panteion University
- School of Pedagogical & Technological Education (A.S.PE.T.E.)
- Technical University of Crete
- National and Kapodistrian University of Athens (absorbed part of TEI of Sterea Hellas)
- University of Crete
- University of Ioannina (absorbed TEI of Epirus)
- University of Macedonia
- University of Patras (absorbed University of West Greece, TEI of Western Greece)
- University of Peloponnisos
- University of Piraeus
- University of Thessaly (absorbed University of Sterea Hellas, absorbed part of TEI of Sterea Hellas)
- University of Thrace (or Democritus University of Thrace)
- University of West Attica
- University of Western Macedonia