- Prof Dr P. Chambard (France) 1949 Paris,
- J. R. Blockey (United Kingdom), 1951 London
- Mr. V. M .J. Mallebay (France), 1953 Barcelona
- Dr K. H. Gustavson (Sweden), 1955 Stockholm
- Dr G.. Bravo (Italy), 1957 Rome
- Prof Dr W. Grassmann (Germany), 1959 Munich
- Prof.Dr H.. Turley (U.S.A.), 1961 Washington
- Ing. P. J. van Vlimmeren (Holland), 1963 The Hague
- Prof Dr A. Tapernoux (France),1965 Lyon
- Dr E. Baumann (Switzerland) 1967 Lucerne
- Dr R. G. Mitton (United Kingdom), 1969 London
- Prof Dr A. Blazej (Czechoslovakia), 1971 Prague
- Prof Dr H. Herfeld (Germany), 1973 Vienna,
- Mrs. M. Paniker de Pelach (Spain), 1975 Barcelona
- Mr. A. Lesuisse (Belgium), 1977 Hamburg
- Prof G. Vallet (France), 1979 Versailles
- Dr A. Sofia (Argentina), 1981 Buenos Aires
- Dr S. Cuccodoro (Italy),1983 Venice
- Dr Robert Sykes (United Kingdom), 1987 Melbourne
- Dr Hubert Wachsman (Switzerland), 1989 Philadelphia
- Mr. R. Gómez-Anguita (Spain),1991 Barcelona
- Dr David G. Bailey (U.S.A.),1993 Porto Allegre
- Mr. Luis Leuck (Brazil), 1995 Friedrichshafen
- Prof Dr Anthony J. Covington (United Kingdom), 1997 London
- Mr. Sanjoy Sen (India), 1999 Chennai Madras
- Mr. Juan Salazar (Colombia). 2001 Cape Town,2003 Mexico D.F.
- Prof.Dr. Jaume Cot (Spain) . 2003 – 2005 Florence
- Mr.Marc Folachier (France), 2006 – 2007
- Mr. Elton Hurlow (USA), 2008 – 2009
- Prof Dr. Bi Shi (China) 2010 – 2011
- Dr Volkan Candar (Turkey) 2012 – 2013
- Dr Patricia Casey (Argentina) 2014 – 2015
- Dr Dietrich Tegtmeyer (Germany) 2016 – 2017
- Mr (Thomas) Chengjen Yu (Taiwan) 2018 – 2019
- Dr Luis Zugno (USA) 2020 – 2021
- Mr Jean-Pierre Gualino (France) 2022 –
