| YEAR | WORLD CONGRESS | WPA PRESIDENT | WPA SECRETARY GENERAL |
| 1950 | Paris | Jean Delay (France) | Henry Ey (France) |
| 1957 | Zurich | Jean Delay (France) | Henry Ey (France) |
| 1961 | Montreal | D. Ewen Cameron (Canada) | Henry Ey (France) |
| 1966 | Madrid | Juan J. López-Ibor (Spain) | Denis Leigh (UK) |
| 1972 | Mexico City | Howard Rome (USA) | Denis Leigh (UK) |
| 1977 | Hawaii | Pierre Pichot (France) | Peter Berner (Austria) |
| 1983 | Vienna | Costas Stefanis (Greece) | Fini Schulsinger (Denmark) |
| 1989 | Athens | Jorge A. Costa e Silva (Brazil) | Juan J. López-Ibor, Jr. (Spain) |
| 1993 | Rio de Janeiro | Felice Lieh-Mak (Hong Kong) | Juan J. López-Ibor, Jr. (Spain) |
| 1996 | Madrid | Norman Sartorius (Switzerland) | Juan E. Mezzich (USA) |
| 1999 | Hamburg | Juan J. López-Ibor, Jr. (Spain) | Juan E. Mezzich (USA) |
| 2002 | Yokohama | Ahmed Okasha (Egypt) | John Cox (UK) |
| 2005 | Cairo | Juan E. Mezzich (USA) | John Cox (UK) |
| 2008 | Prague | Mario Maj (Italy) | Levent Kuey (Turkey) |
