| President | Secretary General | Treasurer |
|---|---|---|
| Prof. C. H. Moureu (France), 1920-1922 | Mr. J. Gérard (France), 1920-1940 | |
| Sir William Pope (UK), 1923-1925 | ||
| Prof. E. Cohen (Netherlands), 1926-1928 | ||
| Prof. E. Biilmann (Denmark), 1928-1934 | ||
| Prof. N. Parravano (Italy), 1934-1938 | ||
| Prof. Marston-Taylor Bogert (USA), 1938-1947 | ||
| Prof. H.-R. Kruyt (Netherlands), 1947-1951 | Prof. R. Delaby (France), 1946-1955 | Dr. L. H. Lampitt (UK), 1947-1957 |
| Prof. A. Tiselius (Sweden), 1951-1955 | ||
| Prof. A. Stoll (Switzerland), 1955-1959 | Dr. R. Morf (Switzerland), 1955-1971 | Sir Charles Dodds (UK), 1957-1963 |
| Prof. W. A. Noyes, Jr. (USA), 1959-1963 | ||
| Lord Todd (UK), 1963-1965 | Prof. J. C. Bailar, Jr. (USA), 1963-1971 | |
| Prof. W. Klemm (Germany), 1965-1967 | ||
| Prof. V. N. Kondratiev (USSR), 1967-1969 | ||
| Dr. A. L. Rees (Australia), 1969-1971 | ||
| Prof. J. Bénard (France), 1971-1973 | Dr. W. Gallay (Canada), 1971-1975 | Prof. O. Horn (Germany), 1971-1979 |
| Prof. Sir Harold Thompson (UK), 1973-1975 | ||
| Dr. R. W. Cairns (USA), 1975-1977 | Prof. G. Ourisson (France), 1975-1983 | |
| Prof. G. Smets (Belgium), 1977-1979 | ||
| Prof. H. Zollinger (Switzerland), 1979-1981 | Dr. W. Graulich (Germany), 1980-1983 | |
| Prof. S. Nagakura (Japan), 1981-1983 | ||
| Dr. W. G. Schneider (Canada), 1983-1985 | Prof. T. S. West (UK), 1983-1991 | Prof. A. Björkman (Denmark), 1983-1991 |
| Prof. C. N. R. Rao (India), 1985-1987 | ||
| Prof. V. A. Koptyug (USSR), 1987-1989 | ||
| Prof. Y. P. Jeannin (France), 1989-1991 | ||
| Prof. A. J. Bard (USA), 1991-1993 | Prof. G. den Boef (Netherlands), 1991-1995 | Prof. J. M. Ward (UK), 1991-1999 |
| Prof. K. I. Zamaraev (Russia), 1993-1995 | ||
| Prof. Albert E. Fischli (Switzerland), 1996-1997 | Dr. E. D. Becker (USA), 1996-2003 | |
| Prof. Joshua Jortner (Israel), 1998-1999 | ||
| Dr. Alan Hayes (UK), 2000-2001 | Dr. Ch. Buxtorf (Switzerland), 2000-2007 | |
| Prof. Piet S. Steyn (South Africa), 2002-2003 | ||
| Prof. Leiv K. Sydnes (Norway), 2004-2005 | Prof. D. StC Black (Australia), 2004-2011 | |
| Prof. Bryan Henry (Canada), 2006-2007 | ||
| Prof. Jung-Il Jin (Korea), 2008-2009 | Prof. John. Corish (Ireland), 2008-2015 | |
| Prof. Nicole J. Moreau (France), 2010-2011 | ||
| Prof. Kazuyuki Tatsumi (Japan), 2012-2013 | Dr. R. Deplanque (Germany), 2012-2013 | |
| Dr. Mark Cesa (USA), 2014-2015 | Mr. Colin. Humphris (UK), 2014-2015 | |
| Prof. Natalia Tarasova (Russia), 2016-2017 | Prof. Richard M. Harthshorn (New Zealand), 2016-2023 | Mr. Colin. Humphris (UK), 2016-2021 |
| Prof. Qi-Feng Zhou (China), 2018-2019 | ||
| Prof. Christopher Brett (Portugal), 2020-2021 | ||
| Prof. Javier García-Martínez (Spain), 2022-2023 | Prof. Wolfram Koch (Germany), 2022-2025 | |
| Prof. Ehud Keinan (Israel), 2024-2025 |
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