British Empire
Canada
Chile
Cuba
Finland
France
Germany
Italy
Japan
Persia/Iran
Poland
Roumania
Spain
Venezuela

Sept. 12-26, 1928
Geneva

British Empire
Alexander George Montagu Cadogan
Ronald John McNeill (Baron Cushendun)
Cecil James Barrington Hurst
Godfrey Lampson Tennyson Locker Lampson

Canada
Raoul Dandurand
William Lyon Mackenzie King

Chile
Enrique Villegas Echeburu

Cuba
Aristides de Aguero y Bethancourt
Orestes Ferrara

Finland
Hjalmar Johan Fredrik Procope

France
Joseph Paul Boncour
Aristide Briand
Rene Lucien Daniel Massigli

Germany
Carl Theodor Conrad von Schubert
Hermann Muller

Italy  
Vittorio Scialoja
Lelio Bonin Longare

Japan
Mineitciro Adatci 

Persia/Iran
Mohammed Ali Khan Foroughi

Poland 
August Zaleski

Roumania  
Constantin Antoniade

Spain 
Emilio de Palacios y Fau
Jose Maria Quinones de Leon

Venezuela 
Cesar Zumeta

President
Hjalmar Johan Fredrik Procope (Finland)

Secretary-General of the League of Nations
James Eric Drummond