- 1952 Louis de Broglie – France
- 1953 Julian Huxley – United Kingdom
- 1954 Waldemar Kaempffert – United States
- 1955 Augusto Pi Sunyer – Venezuela
- 1956 George Gamow – United States
- 1957 Bertrand Russell – United Kingdom
- 1958 Karl von Frisch – Germany
- 1959 Jean Rostand – France
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- 1960 Ritchie Calder – United Kingdom
- 1961 Arthur C. Clarke – United Kingdom
- 1962 Gerard Piel – United States
- 1963 Jagjit Singh – India
- 1964 Warren Weaver – United States
- 1965 Eugene Rabinowitch – United States
- 1966 Paul Couderc – France
- 1967 Fred Hoyle – United Kingdom
- 1968 Gavin de Beer – United Kingdom
- 1969 Konrad Lorenz – Austria
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- 1970 Margaret Mead – United States
- 1971 Pierre Augier – France
- 1972 Philip H. Abelson – United States;
- Nigel Calder – United Kingdom
- 1973 no award
- 1974 José Reis – Brazil
- Luis Estrada Martinez – Mexico
- 1975 no award
- 1976 George Porter – United Kingdom
- Alexander Oparin – Russia
- 1977 Fernand Seguin – Canada
- 1978 Hoimar von Ditfurth – Germany
- 1979 Sergei Kapitza – Russia
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- 1980 Arístides Bastidas – Venezuela
- 1981 David Attenborough – United Kingdom
- Dennis Flanagan – United States
- 1982 Oswaldo Frota-Pessoa – Brazil
- 1983 Abdullah Al Muti Sharafuddin – Bangladesh
- 1984 Yves Coppens – France
- Igor Petryanov – Russia
- 1985 Peter Medawar – United Kingdom
- 1986 Nicolai G. Basov – Russia
- David Suzuki – Canada
- 1987 Marcel Roche – Venezuela
- 1988 Björn Kurtén – Finland
- 1989 Saad Ahmed Shabaan – Egypt
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- 1990 Misbah-Ud-Din Shami – Pakistan
- 1991 Radu Iftimovici – Romania
- Narender K. Sehgal – India
- 1992 Jorge Flores Valdés – Mexico
- Peter Okebukola – Nigeria
- 1993 Piero Angela – Italy
- 1994 Nikolai N. Drozdov – Russia
- 1995 Julieta Fierro Gossman – Mexico
- 1996 Jiří Grygar – Czech Republic
- Jayant V. Narlikar – India
- 1997 Dorairajan Balasubramanian – India
- 1998 Regina Paz Lopez – Philippines
- Ennio Candotti – Brazil
- 1999 Marian Addy – Ghana
- Emil Gabrielian – Armenia
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- 2000 Ernst W. Hamburger – Brazil
- 2001 Stefano Fantoni – Italy
- 2002 Marisela Salvatierra – Venezuela
- 2003 Pervez Hoodbhoy – Pakistan
- 2004 Jean Audouze – France
- 2005 Jeter Bertoletti – Brazil
- 2006-2008 No awards due to change of UNESCO rules
- 2009 Yash Pal – India
- Trinh Xuan Thuan – Vietnam
- 2010 Gokulananda Mohapatra – India
- 2011 René Raúl Drucker Colín – Mexico
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