The Academy Council of the CAS in 2003 awarded the following medals:
The Honorary Medal „De scientia et humanitate optime meritis“
- Prof. PhDr. Ivan Hlaváček, DrSc., Faculty of Philosophy and Arts, Charles University, Prague
- Doc. JUDr. Jiří Kejř, DrSc., former staff member of the CAS Archives, Prague
- Prof. RNDr. Jaroslav Koutecký, DrSc., Freie Universität Berlin, Germany
- Prof. Dr. Jan Tauc, DrSc., Brown University, Providence, Rhode Island, USA
The B. Bolzano Honorary Medal for Merit in the Mathematical Sciences
- Prof. RNDr. Jozef Gruska, DrSc., Faculty of Informatics, Masaryk University, Brno
- Prof. Rudolf Haňka, PhD., Institute of Public Health, University of Cambridge, Great Britain
- Prof. Josef Kittler, Ph.D., University of Surrey, Great Britain
The E. Mach Honorary Medal for Merit in the Physical Sciences
- RNDr. Vladimír Dvořák, DrSc., research scientist, Institute of Physics, CAS, Prague
- RNDr. Vladimír Fiala, CSc., research scientist, Institute of Atmospheric Physics, CAS, Prague
- Ing. Věnceslav F. Kroupa, DrSc., research scientist , Institute of Radio Engineering and Electronics, CAS, Prague
- Prof. Ing. Miloš Pick, DrSc., research scientist, Geophysical Institute, CAS, Prague
- Ing. Axel Plešinger, DrSc., research scientist, Geophysical Institute, CAS, Prague
- Prof. Dr. rer. nat. habil. Siegried Hofmann, Max-Planck-Institut für Metalforschung, Stuttgart, Germany
- Ing. Jan Vondrák, DrSc., research scientist, Astronomical Institute, CAS, Prague
The J. Heyrovský Honorary Medal for Merit in the Chemical Sciences
- Prof. Wyn Brown, University of Uppsala, Sweden
- Prof. Ing. Jaromír Horák, DrSc., research scientist, Institute of Inorganic Chemistry, CAS, the Joint Laboratory of Solid State Chemistry of Pardubice University and the Institute of Macromolecular Chemistry, CAS, Prague
- Prof. Ing. Jindřich Kopeček, DrSc., University of Utah, Salt Lake City, Utah, USA
- Prof. René Lafont, Dr., Université Pierre et Marie Curie, Paris, France
The G. J. Mendel Honorary Medal for Merit in the Biological Sciences
- Prof. MUDr. Jiří Bartek, DrSc., Institute of Cancer Biology, Copenhagen, Denmark
- Dr. Gareth Wyn Griffith, The European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
- Prof. Dr. Josef Jiřičný, University of Zürich, Switzerland
- Ing. Miroslav Kamínek, CSc., research scientist, Institute of Experimental Botany, CAS , Prague
- Prof. Dr. Hartmut K. Lichtenthaler, Dr.h.c., Universität Karlsruhe, Germany
- MVDr. Jiří Lukáš, CSc., Institute of Cancer Biology, Copenhagen, Denmark
- Prof. Thomas A. Miller, University of California, Riverside, California, USA
- Prof. RNDr. Milena Rychnovská, DrSc., Palacký University, Olomouc
The J. E. Purkyně Honorary Medal for Merits in the Biological Sciences
- Prof. Albert J. Aguay, M.D., Ph.D., Center for Research in Neuroscience, Montreal, Canada
- Prof. Zach W. Hall, Ph.D., University of Southern California, Los Angeles, California, USA
- Prof. Rainer Klinke, Dr. med., Physiologisches Institut II, Frankfurt/M, Germany
- Ing. Josef Matoušek, DrSc., research scientist, Institute of Animal Physiology and Genetics, CAS, Liběchov
- Prof. Michael M. Merzenich, PhD., University of California, San Francisco, California, USA
- Prof. Ole Peterson, M.D., FRS, University of Liverpool, Great Britain
- Prof. MUDr. Eva Syková, DrSc., director, Institute of Experimental Medicine, CAS, Prague
- Prof. William Darrell Willis, Jr., M.D., PhD., University of Texas Medical Branch, Galveston, Texas, USA
The K. Engliš Honorary Medal for Merit in the Social and Economic Sciences
- Prof. JUDr. PhDr. Viktor Knapp, DrSc. (in memoriam)
The J. Dobrovský Honorary Medal for Merit in the Social Sciences
- Prof. PhDr. Jan Blahoslav Čapek, Charles University, Prague (in memoriam)
- Doc. PhDr. Zoe Hauptová, CSc., research scientist, Institute of Slavonic Studies, CAS, Prague
- Prof. ThDr. Petr Pokorný, DrSc., Protestant Theological Faculty, Charles University, Prague
The F. Palacký Honorary Medal for Merits in the Social Sciences
- Prof. Dr. Detlef Brandes, Heinrich-Heine-Universität Düsseldorf, Germany
- Prof. Dr. Marcel Kosman, Uniwersytet Adama Mickiewicza, Poznaň, Poland
- PhDr. Josef Krása, CSc. (in memoriam)
- Prof. Georges Mink, Ph.D., director, The French Centre for Research in the Social Sciences, Prague
- Prof. PhDr. Pavel Spunar, CSc., research scientist, Institute for Classical Studies, CAS, Prague
- Prof. Jerzy Tomaszewski, Universytet Warszawski, Warsaw, Poland
- Prof. Dr. Karel Vocelka, Universität Wien, Austria
- Prof. Stanley B. Winters, New Jersey Institute of Technology, Newark, New Jersey, USA
The J. Patočka Memorial Medal
- Prof. RNDr. Pavel Blažka, CSc., Faculty of Biological Sciences, University of South Bohemia, České Budějovice
The V. Náprstek Honorary Medal for Merit in Science Popularisation
- prom. biol.(graduate biologist) Šárka Orlíková, editor of the journal Živa, Prague
- Doc. Ing. Jaroslav Petr, DrSc., research scientist, Research Institute of Animal Production, Prague
- Mgr. Věra Tůmová, Czech Radio 2- Praha
- Prof. RNDr. Zdeněk Veselovský, DrSc., Faculty of Biological Sciences, University of South Bohemia, České Budějovice
- Doc. RNDr. Jan Žďárek, DrSc., research scientist, Institute of Organic Chemistry and Biochemistry, CAS, Prague