| 2011-2023 | Christophe Cudennec | France |
| 2000-2011 | Pierre Hubert | France |
| 1995-2000 | Gordon J. Young | Canada |
| 1987-1995 | Henny J. Colenbrander | Netherlands |
| 1979-1987 | John C. Rodda | UK |
| 1975-1979 | Jean Rodier | France |
| 1971-1975 | György Kovacs | Hungary |
| 1948-1971 | Léon J. Tison | Belgium |
| 1947-1948 | Auguste Vibert | France |
| 1933-1947 | Frédéric Diénert | France |
| 1922-1933 | Giovanni Magrini | Italy |