Past Presidents
| 1919-1922 | Annibale Riccó | Italy |
| 1922-1927 | Alfred Lacroix | France |
| 1927-1933 | Alessandro Malladra | Italy |
| 1933-1936 | Constantine A. Ktenas | Greece |
| 1936-1948 | Auguste Michel-Levy | France |
| 1948-1954 | Berend G. Escher | Netherlands |
| 1954-1963 | Alfred Rittmann | Switzerland/Italy |
| 1963-1967 | Hisashi Kuno | Japan |
| 1967-1971 | Gordon A. MacDonald | U.S.A. |
| 1971-1975 | Georgii S. Gorshkov | U.S.S.R. |
| 1975-1979 | Robert W. Decker | U.S.A. |
| 1979-1983 | Sergei A. Fedotov | U.S.S.R. |
| 1983-1987 | Ian G. Gass | U.K. |
| 1987-1991 | Shigeo Aramaki | Japan |
| 1991-1995 | Paolo Gasparini | Italy |
| 1995-1999 | Grant Heiken | U.S.A. |
| 1999-2003 | Steve J. Sparks | U.K. |
| 2003-2007 | Oded Navon | Israel |
| 2007-2011 | Setsuya Nakada | Japan |
| 2011-2015 | Ray Cas | Australia |
| 2015-2019 | Donald B. Dingwell | Germany |
| 2019-2023 | Patrick Allard | France |
Secretary General
| 1919-1936 | Alessandro Malladra | Italy |
| 1936-1960 | Francesco Signore | Italy |
| 1960-1967 | Francesco Penta | Italy |
| 1967-1975 | Pierre Evrard | Belgium |
| 1975-1983 | Peter E. Baker | U.K. |
| 1983-1991 | Hans-Ulrich Schmincke | F.R. Germany |
| 1991-1999 | R.Wally Johnson | Australia |
| 1999-2007 | Steve R. McNutt | U.S.A. |
| 2007-2015 | Joan Marti | Spain |
| 2015-2023 | Roberto Sulpizio | Italy |