| Year | Plenary Speakers |
| 1976 | N.A. |
| 1978 | N.A. |
| 1980 | N.A. |
| 1982 (SIS*) | —- |
| 1984 | H. Ted Davis, USA J. Israelachvili, USA B. Widom, USA Toyoki Kunitake, Japan D.T. Wasan, USA |
| 1986 | —- |
| 1988 | D. Fennel Evans, USA B. Robinson, UK M. Kahlweit, Germany R. Schutte, Syncrude, Canada |
| 1990 | J. Th. G. Overbeek, The Netherlands C.A. Bunton, USA J.D. Swalen, USA H. Ti Tien, USA |
| 1992 | B.Widom, USA I Ivanov, Bulgaria B. Ninham, Australia A.I.Rusanov, Russia E. Dickinson, UK |
| 1994 | B. Lindman, Sweden J. Israelachvili, USA D.T. Wasan, USA H. Rivas, Venezuela |
| 1996 | P.G. de Gennes, France Kozo Shinoda, Japan E. Sackmann, Germany P. Walstra, The Netherlands |
| 1998 | Stig Friberg, USA Barry Ninham, Australia D.O. Shah, USA R. Zana, France |
| 2000 | P. Somasundaran, USA Hans Lyklema, The Netherlands D.O. Shah and Brij Moudgil, USA Helmut Mohwald, Germany R Aveyard and J.H. Clint, UK |
| 2002 | B. Lindman, Sweden (Kash Mittal Awardee) Hironobu Kunieda, Japan Eli Ruckenstein, USA Heinz Hoffmann, Germany M. Aruto Lopez-Quintela, Spain |
| 2004 | Barry Ninham, Australia (Kash Mittal Awardee) Nissim Garti, Israel Krister Holmberg, Sweden Hernan Chaimovich, Brazil Maria da Graca Miguel, Portugal |
| 2006 | Eric Kaler, USA (Kash Mittal Awardee) Toshiyuki Suzuki, Kao Corp. Japan Mahn Won Kim (KAIST-KIAS), Korea M.P. Pileni, France P. Somasundaran, USA |
| 2008 | Raoul Zana, France (Kash Mittal Awardee) Clarence Miller, USA John Ralston, Australia Dieter Vollhardt, Germany Eric Dickinson, UK |
| 2010 | Brian Vincent, UK (Kash Mittal Awardee) Thomas Healy, Australia Kazue Kurihara, Japan Martin Malmsten, Sweden Frank Caruso, Australia |
| 2012 | Dominique Langevin, France(Kash Mittal Awardee) Reinhard Miller, Germany Theo van de Ven, Canada Clarence Miller, USA |
| 2014 | Nissim Garti, Israel (Kash Mittal Awardee) Maria Miguel, Portugal Yeshayahu Talmon, Israel Henk Lekkerkerker, The Netherlands Kenichi Yoshikawa, Japan Colin Bain, UK |
| 2016 | Dinesh O. Shah, USA/India (Kash Mittal Awardee) Laurence S. Romsted, USA Toyoko Imae, Taiwan Conxita Solans, Spain Yitai Qian, China |
| 2018 | Krister Holmberg, Sweden (Kash Mittal Awardee) Masahiko Abe, Japan Jean-Louis Salager, Venezuela George Smith, USA Gregory Warr, Australia |
| 2020 | MEETING NOT HELD; Lawrence Romsted (Kash Mittal Awardee) |
| 2022 | Kazimiera Wilk, Poland (Kash Mittal Awardee) Ramon G Rubio, Spain Brian Grady, USA Jingcheng Hao, China |
| 2024 | Thomas Zemb (Kash Mittal Awardee) Sunil Bhagwat, India John Texter, USA Jong Duk Kim, Korea Calum Drummond, Australia |
* The name SIS was used for the first time