Honorary Members of the ISOP
(Alphabetically arranged), years 1952-2012
| Honorees | Date of Election |
| Adam, Katherine M. G. | 1979* |
| Adoutte, Andre | 2012* |
| Baker, John R. | 1988 |
| Ball, Gordon H. | 1967* |
| Bardele, Christian | 2012 |
| Beale, Geoffrey H. | 1970* |
| Beltrán, Enrique | 1982* |
| Bereczky, Magdolna Cs. | 1997 |
| Beyer, Tamara V. | 1999* |
| Blackburn, Elizabeth | 2012 |
| Bovee, Eugene C. | 1988* |
| Bray, R. S. | 1987* |
| Brenner, Zigman | 1984* |
| Brugerolle, Guy | 2012 |
| Cachon, Monique Enjumet | 1996 |
| Canning, Elizabeth U. | 1994 |
| Cavalier-Smith, Thomas | 2012 |
| Cazzullo, Juan Jose | 2012 |
| Chapman-Andresen, Cicily | 1994 |
| Choi, Joong Ki | 2012 |
| Cleveland, L(emeuel) R(oscoe) | 1959* |
| Corliss, John O. | 1984 |
| Cross, George | 2012 |
| Diamond, Louis S. | 1994* |
| Dragesco, Jean | 2000 |
| Dryl, Stanislaw | 1981* |
| Elliott, Alfred M. | 1974* |
| Fallis, A. M(urray) | 2000* |
| Fauré-Fremiet, Emmanuel | 1958* |
| Fernandez-Galiano, Dimas | 1999* |
| Garnham, P. Cyril C. | 1966* |
| Grassé, Pierre-Paul | 1963* |
| Grell, Karl G. | 1972* |
| Hall, Richard P. | 1966* |
| Hartmann, Max | 1954* |
| Heckmann, Klaus | 2012 |
| Hiwatashi, Koichi | 1995* |
| Hoare, Cecil A. | 1957* |
| Hollande, André C. | 1978* |
| Holter, Heinz | 1971* |
| Honigberg, Bronislaw M. | 1979* |
| Hovasse, Raymond | 1966* |
| Hutner, Seymour H. | 1977* |
| Hyman, Libbie Henrietta | 1960* |
| Im, Kyung Il | 2012 |
| Jahn, Theodore Louis | 1973* |
| Jepps, Margaret W. | 1957* |
| Jírovec, Otto | 1965* |
| Kidder, George W. | 1970* |
| Klein, Bruno M. | 1952* |
| Krascheninnikow, Serhij | 1991* |
| Kudo, Richard Roksabro | 1956* |
| Kulda, Jaroslav | 2012 |
| Laird, Marshall | 1998 |
| Lainson, Ralph | 1997 |
| Lee, John J. | 1998 |
| Levine, Norman D. | 1971* |
| Lom, Jirí | 1995* |
| Luporini, Pierangelo | 2012 |
| Lynn, Denis | 2013 |
| Mignot, Jean-Pierre | 2012 |
| Miyake, Akio | 2012 |
| Moestrup, Ojvind | 2012 |
| Müller, Miklós | 1996 |
| Nie, Dashiu | 1987* |
| Nigrelli, Ross F. | 1973* |
| Nilsson, Jytte R. | 2012 |
| Noland, Lowell E. | 1968* |
| Nozawa, Yoshinori | 2012 |
| Pawlowski, Jan | 2013 |
| Penard, Eugène | 1952* |
| Poljansky, Georg I. | 1964* |
| Preer, John R., Jr. | 1999 |
| Prescott, David M. | 2000* |
| Pringsheim, Ernst G. | 1962* |
| Puytorac, Pierre de | 1991 |
| Raikov, Igor B. | 1996 |
| Ray, Harendranath N. | 1966* |
| Reichenow, Eduard | 1954* |
| Robertson, Muriel | 1953* |
| Rudzinska, Maria A. | 1982* |
| Sandon, Harold | 1969* |
| Satir, Peter | 2012 |
| Scholtyseck, Erich | 1982* |
| Sergent, Edmond | 1961* |
| Shen, Yunfen | 1997* |
| Sleigh, Michael | 1998 |
| Sonneborn, Tracy M. | 1970* |
| Sprague, Victor | 1998 |
| Takahashi, Mihoko | 2012 |
| Tartar, Vance | 1974* |
| Taylor, Max (FJR) | 2012 |
| Tchang, Tso-run | 1984* |
| Trager, William | 1965* |
| Tyzzer, E. E. | 1955* |
| Vickerman, Keith | 1994 |
| Vivier, Emile | 1991 |
| Wallace, Franklin G. | 1981* |
| Watanabe, Yoshio | 2012 |
| Wenrich, David H. | 1956* |
| *Deceased | |