1998 – 2000: John Cameron, USA (Chair, Ad Hoc Committee)
Azam Niroomand-Rad, USA
Fridtjof Nusslin, Germany
Colin Orton, USA (Ex-Officio)

2000 – 2003: Fridtjof Nusslin, Germany, Chair
Azam Niroomand-Rad, USA
Perry Sprawls, USA
Slavik Tabakov, UK
Carlos de Almeda, Brazil
Akira Ito, Japan
W J Strydom, South Africa
John Coles, Australia

2003 – 2006: Perry Sprawls, USA (Chair)
Fridtjof Nusslin, Germany
Slavik Tabakov, UK
Anchali Krisanachinda, Thailand
John Coles, Australia
Carlos de Almeda, Brazil
Debbie Vandermerwe, South Africa

2006 – 2007: Slavik Tabakov, UK (Chair)
Don Frey, USA
Anchali Krisanachinda, Thailand
Debbie Vandermerwe, South Africa
Brian Thomas, Australia

2007 – 2009: Don Frey, USA (Chair)
Slavik Tabakov, UK
Anchali Krisanachinda, Thailand
Debbie Vandermerwe, South Africa
Brian Thomas, Australia

2009 – 2012: Don Frey, USA (Chair)
Slavik Tabakov, UK
Anchali Krisanachinda, Thailand
Brian Thomas, Australia
Deborah G. van der Merwe, S Africa
Shada Wadi-Ramahi, Jordan
Maria Ester Brandan, Mexico