Previous Congresses
| Year | City | State | Congress President |
| 2025 | Enschede | Netherlands | Dimitrios Stamatialis |
| 2024 | Aachen | Germany | Payam Akhyari |
| 2023 | Bergamo | Italy | Andrea Remuzzi |
| 2022 | Krems | Austria | Viktoria Weber |
| 2021 | London | UK | Ashraf Khir |
| 2019 | Hannover | Germany | Birgit Glasmacher |
| 2018 | Madrid | Spain | Juan F. Del Canizo Lopez |
| 2017 | Vienna | Austria | Heinrich Schima |
| 2016 | Warsaw | Poland | Piotr Ladyzynski |
| 2015 | Leuven | Belgium | Bart Meyns |
| 2014 | Rome | Italy | Gerado Catapano & Celestino Pio Lombardi |
| 2013 | Glasgow | Scotland, UK | Terence Gourlay |
| 2012 | Rostock | Germany | Gustav Steinhoff |
| 2011 | Porto | Portugal | Rui Reis |
| 2010 | Skopje | Marcedonia | Aleksandar Sikole |
| 2009 | Compiegne | France | Cecile Legallais |
| 2008 | Geneva | Switzerland | Beat Walpoth |
| 2007 | Krems | Austria | Dieter Falkenhagen |
| 2006 | Umea | Sweden | Bernd Stegmayr |
| 2005 | Bologna | Italy | Sergio Stefoni |
| 2004 | Warsaw | Poland | Jan Wojcicki |
| 2003 | Aachen | Germany | Kosrow Motthagy |
| 2002 | Vienna | Austria | Udo Losert |
| 2001 | Ghent | Belgium | Pascal Verdonck |
| 2000 | Lausanne | Switzerland | Beat Walpoth |
| 1999 | Edinburgh | U.K. | Alexander Davison |
| 1998 | Bologna | Italy | Sergio Stefoni |
| 1997 | Budapest | Hungary | Judith Walter |
| 1996 | Warsaw | Poland | Jan Wojcicki |
| 1995 | Berlin | Germany | Klaus Affeld |
| 1994 | Barcelona | Spain | |
| 1993 | Amsterdam | Netherlands | |
| 1992 | Rhodes | Greece | |
| 1991 | Vienna | Austria | |
| 1990 | Bologna | Italy | Vittorio Bonomini |
| 1989 | Brussels | Belgium | Severin Ringoir |
| 1988 | Prague | Czech Republic | Albert Valek |
| 1987 | Munich | Germany | Hans-Jürgen Gurland |
| 1986 | Avignon | France | |
| 1985 | Athens | Greece | |
| 1984 | Alpbach | Austria | |
| 1983 | Bologna | Italy | |
| 1982 | Brussels | Belgium | |
| 1981 | Copenhagen | Denmark | |
| 1980 | Geneva | Switzerland | |
| 1979 | Geneva | Switzerland | |
| 1978 | Zurich | Switzerland | |
| 1977 | London | U.K. | |
| 1976 | London | U.K. | |
| 1975 | West Berlin | Germany | |
| 1974 | West Berlin | Germany |
ESAO Presidents
| Period | President |
| 2025-2027 | D. Stamatialis (the Netherlands) |
| 2023-2025 | U. Steinseifer (Germany) |
| 2021-2023 | V. Weber (Austria) |
| 2019-2021 | P. Ladyzynski (Poland) |
| 2017-2019 | C. Legallais (France) |
| 2015-2017 | T. Groth (Germany) |
| 2012-2015 | B. Stegmayr (Sweden) |
| 2010-2012 | H. Schima (Austria) |
| 2008-2010 | B. Meyns (Belgium) |
| 2006-2008 | B.H. Walpoth (Switzerland) |
| 2004-2006 | G. Rakhorst (the Netherlands) |
| 2002-2004 | R. Vanholder (Belgium) |
| 2000-2002 | D. Falkenhagen (Austria) |
| 1998-2000 | K. Affeld (Germany) |
| 1996-1998 | S. Stefoni (Italy) |
| 1994-1996 | H.J. Gurland (Germany) |
| 1992-1994 | D. Loisance (France) |
| 1990-1992 | S. Rapits (Greece) |
| 1988-1990 | H. Klinkmann (Italy) |
| 1986-1988 | V. Bonomini (Italy) |
| 1984-1986 | V. Bonomini (Italy) |
| 1982-1984 | D. Laurent (France) |
| 1980-1982 | I. Rygg (Denmark) |
| 1978-1980 | Ch. Hahn (Switzerland) |
| 1978 | A. Senning (Switzerland) |
| 1975-1978 | D. Melrose (U.K.) |
| 1974 | E. Bucherl (Germany) |
