K
- Jerome Kagan
- Daniel Kahneman, Nobel Prize in Economics, behavioral finance and hedonic psychology
- Mieko Kamiya
- Jacob Robert Kantor, organized scientific values into a coherent system of psychology
- Alan S. Kaufman
- Nadeen L. Kaufman
- Alan Kazdin
- George Kelly
- Harold Kelley
- Otto F. Kernberg
- Doreen Kimura
- Akiyoshi Kitaoka
- Melanie Klein
- Brian Knutson
- Kurt Koffka, co-founder of Gestalt psychology
- Wolfgang Köhler, co-founder of Gestalt psychology
- Lawrence Kohlberg, moral psychology
- Heinz Kohut
- Stephen Kosslyn
- Elizabeth Kübler-Ross
- Fritz Künkel, We-psychology
Read more about this topic: List Of Psychologists