Honorary Membership in the International Society of Protozoologists.
Honorary Members are protistologists, not necessarily members of the Society, who have distinguished themselves by service to the Society, by their outstanding contributions to protistological research or by a combination of these activities. Each year, the Executive Committee may consider one or more names of protistologists, who qualify for Honorary Membership. Names of protistologists may be provided by any member of the Society to the Secretary of the Society. As well, the President may establish an ad hoc Honorary Membership Committee, which should be chaired by an Honorary Member. This Committee may also propose names of protistologists. If recommended by the Executive Committee, election to Honorary Membership is by a majority vote of all members present and voting at a duly scheduled Annual Business Meeting of the Society. Honorary members are thereafter notified by the Membership Secretary of their election and notified of their benefits.
Honorary Members of the ISOP 1952–2023
| Honorees |
| Katherine M. G. Adam* |
| Andre Adoutte* |
| O. Roger Anderson |
| John R. Baker* |
| Gordon H. Ball* |
| Christian Bardele |
| Geoffrey H. Beale* |
| Enrique Beltrán* |
| Marlene Benchimol |
| Magdolna Bereczky |
| Tamara V. Beyer* |
| Elizabeth Blackburn |
| Eugene C. Bovee* |
| Phyllis Bradbury* |
| R. S. Bray* |
| Zigman Brenner* |
| Guy Brugerolle |
| Elizabeth U. Canning |
| David Caron |
| Thomas Cavalier-Smith* |
| Juan Jose Cazzullo |
| Cicily Chapman-Andresen* |
| Jung Ki Choi |
| Lemeuel Roscoe Cleveland* |
| John O. Corliss* |
| George Cross |
| Louis S. Diamond* |
| Roberto Docampo |
| Jean Dragesco |
| Stanislaw Dryl* |
| Alfred M. Elliott* |
| Monique Enjumet Cachon* |
| A. Murray Fallis* |
| Emmanuel Fauré-Fremiet* |
| Tom Fenchel |
| Dimas Fernandez-Galiano* |
| Joesph Gall |
| P. Cyril C. Garnham* |
| Wendy Gibson |
| Pierre-Paul Grassé* |
| Karl G. Grell* |
| Richard P. Hall* |
| Max Hartmann* |
| Klaus Heckmann* |
| Koichi Hiwatashi* |
| Cecil A. Hoare* |
| André C. Hollande* |
| Heinz Holter* |
| Bronislaw M. Honigberg* |
| Raymond Hovasse* |
| Seymour H. Hutner* |
| Libbie Henrietta Hyman* |
| Kyung-il Im |
| Theodore Louis Jahn* |
| Kwang Jeon |
| Margaret W. Jepps* |
| Otto Jírovec* |
| Edna Kaneshiro |
| George W Kidder* |
| Bruno M. Klein* |
| Serhij Krascheninnikow* |
| Richard Roksabro Kudo* |
| Jaroslav Kulda |
| Ralph Lainson* |
| Marshall Laird* |
| Magdolna Landau |
| John J. Lee |
| Norman D. Levine* |
| Jirí Lom* |
| Pierangelo Luporini |
| Denis Lynn* |
| Jean-Pierre Mignot |
| Akio Miyake |
| Ojvind Moestrup |
| Miklós Müller |
| Dashiu Nie* |
| Ross F. Nigrelli* |
| Jytte R. Nilsson |
| Lowell E. Noland* |
| Yoshinori Nozawa |
| Jan Pawlowski |
| Eugène Penard* |
| Georg I. Poljansky* |
| John R. Preer, Jr* |
| David M. Prescott* |
| Ernst G. Pringsheim* |
| Pierre de Puytorac |
| Igor B. Raikov* |
| Harendranath N. Ray* |
| Eduard Reichenow* |
| Muriel Robertson* |
| Maria A. Rudzinska* |
| Harold Sandon* |
| Peter Satir* |
| Erich Scholtyseck* |
| Edmond Sergent* |
| Yunfen Shen* |
| Michael Sleigh |
| Tracy M. Sonneborn* |
| Wanderley Souza |
| Victor Sprague* |
| Mihoko Takahashi |
| Vance Tartar* |
| Max FJR Taylor |
| Tso-Run Tchang* |
| William Trager* |
| E. E. Tyzzer* |
| Keith Vickerman* |
| Emile Vivier* |
| Franklin G. Wallace* |
| Yoshio Watanabe* |
| David H. Wenrich* |