2016 – 2018: Luca Incrocci, Netherlands
2014 – 2016: Wayne J.G. Hellstrom, U.S.A.
2012 – 2014: Chris G. McMahon, Australia
2010 – 2012: Edgardo F. Becher, Argentina
2008 – 2010: John Dean, United Kingdom
2006 – 2008: Ira D. Sharlip, U.S.A.
2004 – 2006: P. Ganesan Adaikan, Singapore
2002 – 2004: Jacques Buvat, France
2000 – 2002: Sidney Glina, Brazil
1998 – 2000: Ronald W. Lewis, U.S.A.
1994 – 1998: Robert J. Krane, U.S.A. *
1986 – 1994: Gorm Wagner, Denmark *
1984 – 1986: Vaclav Michal, Czechoslovakia *
* Deceased