Leonard Zusne (1924- ) was an American psychologist.
He wrote an important early collection of biographical studies of some 500 psychologist who were voted as being influential in the development of the discipline by a panel of judges.He first published this in 1975, basing it on a list generated by E.L. Annin, E.G. Boring and R.I. Watson in 1968. They reported on the evaluations made by 9 eminent psychologists who rated possible candidates on a three point scale. With a possible score of 27 Zusne selected those with a cutoff score of 11 or more for inclusion in the initial work. He the produced a second edition in 1984 in which he added a further 101 names
He also produced a volume entitled Eponyms in Psychology: A Dictionary and Biographical Sourcebook in 1987.
- Zusne,Leonard & Jones, Warren H.(1989). Anomalistic psychology: a study of magical thinking. Lawrence Erlbaum Associates. pp. 167. ISBN 0805805087. 
- Zusne, L. (1987). Eponyms in Psychology: A Dictionary and Biographical Sourcebook.Greenwood Press ISBN 0313257507
- Zusne, L. (1984). Biographical Dictionary of Psychology. Westport, CT: Greenwood Press