2003 Paal I. Davidson, Norway
	2002 James H. Hines, Jr., MA, USA
	2001 Ali N. Mashayekhi, Iran
	2000 Jac A. M. Vennix, The Netherlands
	1999 Alexander L. Pugh, III, MA, USA
	1998 Yaman Barlas, Istanbul, Turkey
	1997 George P. Richardson, NY, USA
	1996 John D. W. Morecroft, London, UK
	1995 Khalid Saeed, Bangkok, Thailand
	1994 Andrew Ford, WA, USA
	1993 Peter M. Milling, Mannheim, Germany
	1992 John D. Sterman, MA, USA
	1991 Erich K. O. Zahn, Stuttgart, Germany
	1990 Peter Gardiner, CA, USA
	1989 Eric F. Wolstenholme, Bradford, UK
	1987-1988 Nathan B. Forrester, MA, USA*
	1986-1987 Dennis L. Meadows, NH, USA
	1985-1986 Jorgen Randers, Oslo, Norway
	1984-1985 David F. Andersen, NY, USA
	1983-1984 Jay W. Forrester, MA, USA

* Served 18 months to switch the presidency to calendar year terms.