1962-1968 Fred Henry (USA)
1968-1971 Sir Terence G. Ward (United Kingdom)
1971-1974 Jorgen Rud (Denmark)
1974-1977 Alton D. MacAlister (New Zealand)
1977-1980 W.A.M. van der Kwast (Netherlands)
1980-1983 Geoffrey L. Howe (Hong Kong)
1983-1986 Daniel Laskin (USA)
1986-1989 Wilfried G. Schilli (Germany)
1989-1992 Robert V. Walker (USA)
1992-1995 Robert M. Cook (Australia)
1995-1997 Rudolf Fries (Austria)
1997-1999 Peter Banks (United Kingdom)
1999-2001 John F. Helfrick (USA)
2001-2003 Paul J. W. Stoelinga (Netherlands)
2003-2005 Jose Luis Ferreria (Argentina)
2005-2007 John Ll. Williams (United Kingdom)
2007-2009 Nabil Samman ( Hong Kong)
2009-2011 Larry W. Nissen (USA)
2011-2013 Kishore Nayak (India)
2013-2015 Piet Haers (UK)
2015-2017 Julio Acero (Spain)
2017-2019 Alexis Olsson (USA)
2019-2021 Gabriele Millesi (Austria)