| 1939 | Corresponding member of the USSR Academy of Sciences |
| 1943 | Full member (also Founding member) of Armenian SSR Academy of Sciences |
| 1953 | Corresponding member of the Royal Society (Academy of sciences) of Belgium (Liege) |
| 1953 | Full member of the USSR Academy of Sciences |
| 1956 | Corresponding member of the Academy of Sciences of Austria |
| 1957 | Corresponding member of German Academy of Sciences in Berlin |
| 1957 | Foreign honorary member of American Academy of Arts and Sciences (Boston) |
| 1958-74 | Corresponding member of the Academy of Sciences of France |
| 1959 | Member of the USA National Academy of Sciences |
| 1959 | Foreign member of German Academy of Naturalists (“Leopoldina”) in Halle (GDR) |
| 1967 | Member of Italian National Academy of Sciences “Dei Lincei” |
| 1970 | Member of the Royal Netherlands Academy of Sciences |
| 1971 | Member of the Royal Academy of Sciences of Denmark |
| 1972 | Honorary member of Azerbaijan SSR Academy of Sciences |
| 1973 | Honorary member of New-York Academy of Sciences |
| 1973 | Honorary member of the Royal Academy of Sciences of Sweden |
| 1974 | Foreign member of the Academy of Sciences of Bulgaria |
| 1974 | Foreign member of Cordoba (Argentina) Academy of Sciences |
| 1976 | Foreign member of the Academy of Sciences of India |
| 1978 | Honorary member of Georgian SSR Academy of Sciences |
| 1978 | Foreign member (Associé étranger) of the Academy of Sciences of France |
| 1978 | Foreign member of the Academy of Sciences of Czechoslovakia |
| 1978 | Corresponding member of the International Academy of Astronautics |
| 1979 | Honorary member of the Academy of Sciences of Hungary |
| 1983 | Foreign member of the Academy of Sciences of Athens (Greece) |
| 1984 | Foreign member of Syrian Scientific Society (Academy of sciences) |
| 1992 | Full member of the Academy of Creativity (Russia) |
| 1992 | Full member of European Academy (London) |
| 1994 | Honorary member of Armenian Philosophical Academy |
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