Secretary-General Period Official Headquarters of the Institute
Joe Verhoeven from 2003 to 2015 Grez-Doiceau (Belgium)
Christian Dominicé from 1991 to 2003 Geneva (Switzerland)
Nicolas Valticos from 1981 to 1991 Geneva (Switzerland)
Paul De Visscher from1969 to 1981 Brussels (Belgium)
Mme Suzanne Bastid from 1963 to 1969 Paris (France)
Paul Guggenheim (interim) from 1962 to 1963 Geneva (Switzerland)
Hans Wehberg from 1950 to 1962 Geneva (Switzerland)
Fernand De Visscher from 1937 to 1950 Brussels (Belgium)
Charles De Visscher from 1927 to 1937 Ghent (Belgium) (1927-1931)
Brussels (Belgium) (1931-1937)
Alfred Nerincx from 1923 to 1927 Louvain (Belgium)
Albéric Rolin from 1906 to 1923 Ghent (Belgium) (1906-1913)
The Hague (The Netherlands) (1913-1919)
Brussels (Belgium) (1931-1937)
Edouard Descamps from 1900 to 1906 Louvain (Belgium)
Ernest Lehr from 1892 to 1900 Lausanne (Switzerland)
Gustave Rolin-Jaequemyns from 1887 to 1892 Brussels (Belgium)
Alphonse Rivier from 1878 to 1887 Brussels (Belgium)
Gustave Rolin-Jaequemyns from 1873 to 1878 Ghent (Belgium)