The following is a list of psychologists and contributors to the field of psychology who have been commemorated on worldwide postage stamps. It is adapted from two philatelic listings published by psychologists Dr. Gary Brucato and Dr. John D. Hogan in 1999, and psychology historian Dr. Ludy T. Benjamin in 2003. The following index provides the name of each honoree, a brief description of his or her contributions, and the nation and year in which the stamp was issued: