Former Presidents
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| Alain Pellet
Angers 2023 |
XUE Hanqin
Online 2021 |
Nico Schrijver
The Hague 2019 |
Pemmaraju Sreenivasa Rao
Hyderabad 2017 |
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| Rein Müllerson
Tallinn 2015 |
Hisashi Owada
Tokyo 2013 |
Emmanuel Roucounas
Rhodes 2011 |
Benedetto Conforti
Naples 2009 |
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| Francisco Orrego Vicuña
Santiago 2007 |
Jerzy Mackarczyk
Krakow 2005 |
Georges van Hecke
Bruges 2003 |
Edward McWhinney
Vancouver 2001 |
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| Erik Jayme
Berlin 1999 |
Krzysztof Skubiszweski
Strasbourg 1997 |
Antonio Ferrer Correia
Lisbon 1995 |
Roberto Ago
Milan 1993 |
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| Pierre Lalive
Basel 1991 |
Juan Manuel Castro Rial
Saint-Jacques-de-Compostelle 1989 |
Boutros Boutros-Ghali
Cairo 1987 |
Paul Reuter
Helsinki 1985 |
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| Sir Robert Jennings
Cambridge 1983 |
Charles Rousseau
Dijon 1981 |
Andre Gros
Athens 1979 |
Mustafa Kamil Yasseen
Oslo 1977 |
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| Wilhelm Wengler
Wiesbaden 1975 |
Gaetano Morelli
Rome 1973 |
Juraj Andrassy
Zagreb 1971 |
Sir Gerald Fitzmaurice
Edinburgh 1969 |
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| Harroldo Valladao
Nice 1967 |
Bohdan Winiarski
Warsaw 1965 |
Henri Rolin
Brussels 1963 |
Alfred von Verdross
Salzburg 1961 |
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| Georges Sauser-Hall
Neuchâtel 1959 |
J.P.A. François
Amsterdam 1957 |
Jose de Yanguas Messia
Grenade 1956 |
Albert Geouffre de la Pradelle
Aix-en-Provence 1954 |
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| Tomaso Perassi
Sienna 1952 |
Sir Arnold Duncan McNair
Bath 1950 |
Charles de Visscher
Brussels 1948 |
Baron Boris Nolde
Lausanne 1947 |
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| Sir Cecil Hurst
Luxembourg 1937 |
Baron Edouard Rolin-Jaequemyns
Brussels 1936 |
Charles Lyon-Caen
Paris 1934 |
Frederik Valdemar Beichmann
Oslo 1932 |
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| Alexander Pearce Higgins
Cambridge 1931 |
James Brown Scott
New York 1929 & Lausanne 1927 |
Knut Hjalmar Hammerskjold
Stockholm 1928 |
B.J.C. Loder
The Hague 1925 |
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| Leo Strisower
Vienna 1924 |
Baron Edouard Rolin-Jaequemyns
Brussels 1923 |
Andre Weiss
Grenoble 1922 |
Marquis Corsi
Rome 1921 |
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| Sir Thomas Barclay
Paris 1919 |
Thomas Erskine Holland
Oxford 1913 |
Georg Francis Hagerup
Christiania 1912 |
Edouard Clunet
Madrid 1911 |
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| Charles Lyon-Caen
Paris 1910 |
Carlo Francesco Gabba
Florence 1908 |
Albéric Rolin
Ghent 1906 |
Lord Reay
Edinburgh 1904 |
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| Baron Edouard Descamps
Brussels 1902 |
Charles Lardy
Neuchâtel 1900 |
Tobias M.C. Asser
The Hague 1898 |
Carl Goos
Copenhagen 1897 |
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| Emilio Brusa
Venice 1896 |
John Westlake
Cambridge 1895 |
Louis Renault
Paris 1894 |
Gustave Moynier
Geneva 1892 |
| Carl Ludwig von Bar
Hamburg 1891 |
Alphonse Rivier
Lausanne 1888 |
Auguste de Bulmerincq
Heidelberg 1887 |
Gustave Rolin-Jaequemyns
Brussels 1885 |
| Baron Joachim de Holtzendorff
Munich 1883 |
Auguste Pierantoni
Turin 1882 |
Right Hon. Mountague Bernard
Oxford 1880 |
Gustave Rolin-Jaequemyns
Brussels 1879 |
| Félix Esquirou de Parieu
Paris 1878 |
Félix Esquirou de Parieu
Zurich 1877 |
Jean-Gaspard Bluntschli
The Hague 1875 |
Pasquale Stanislao Mancini
Geneva 1874 |
Each President of the Institute presided over one (sometimes two) session(s), with the exception of the following eight Presidents:
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| René-Jean Dupuy (1995-1997) | Erik Castrén (1983-1985) | Constantin Eustathiadès (1977-1979) | Edouard Hambro (1975-1977) |
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| Jean Spiropoulos (1965-1967) | Nicolas Politis (1937-1942) | Marquis d’Alhucemas (1932-1934, 1934-1936) | Henri Harburger (1914-1916) |
Among the titles delivered by the Institute, there is also that of Honorary President. Those who have been elected Honorary Presidents are:
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| Gustave Rolin-Jaequemyns (1892) | Gustave Moynier (1894) | John Westlake (1911) | Albéric Rolin (1923) | Charles De Visscher (1954) |