Honorary members
- Academia Nacional de CienciasCosta Rica
- Academy of AthensGreece
- Academy of Science of South AfricaSouth Africa
- Academy of Sciences of AlbaniaAlbania
- Academy of Scientific Research and TechnologyEgypt
- Accademia Nazionale dei LinceiItaly
- American Academy of Arts and Sciences, USAUSA
- Arab Academy of Science, Technology and Maritime TransportEgypt
- Austrian Academy of SciencesAustria
- Azerbaijan National Academy of SciencesAzerbaijan
- Bulgarian Academy of SciencesBulgaria
- Chinese of Academy of Social Sciences, CASSChina
- Congolese Academy of SciencesDemocratic Republic of the Congo
- Croatian Academy of Sciences and ArtsCroatia
- Cyprus Academy of Sciences, Letters, and ArtsCyprus
- Estonian Academy of SciencesEstonia
- Ethiopian Academy of SciencesEthiopia
- Georgian Academy of Natural SciencesGeorgia
- Georgian National Academy of Sciences,Georgia
- German National Academy of Sciences LeopoldinaGermany
OBSERVERS
- Hungarian Academy of SciencesHungary
- Indian Academy of SciencesIndia
- Indian National Science AcademyIndia
- Israel Academy of Sciences and HumanitiesIsrael
- Kenya National Academy of Sciences (KNAS)Kenya
- Montenegrin Academy of Sciences and ArtsMontenegro
- National Academy of Exact, Physical and Natural Sciences of ArgentinaArgentina
- National Academy of Medicine of Buenos AiresArgentina
- National Academy of Sciences and Techniques of SenegalSenegal
- National Academy of Sciences of HondurasHonduras
- National Academy of Sciences of Sri LankaSri Lanka
- National Academy of Sciences of the Republic of KoreaSouth Korea
- Norwegian Academy of Science and LettersNorway
- Pontifical Academy of Science, The VaticanVatican City State
- Royal Academy of Sciences, Letters and Fine Arts of BelgiumBelgium
- Royal Flemish Academy of Belgium for Science and the ArtsBelgium
- Royal SocietyUnited Kingdom
OBSERVERS
- Royal Society of CanadaCanada
- Serbian Academy of Sciences and Arts (SASA)Serbia
- The British AcademyUnited Kingdom
OBSERVERS
- Turkish Academy of SciencesTurkey
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