John D. Mayer is an American psychologist at the University of New Hampshire, specializing in emotional intelligence and personality psychology.

He co-developed a popular model of emotional intelligence with Peter Salovey.

[1] He is one of the authors of the Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT),[2] and has developed a new, integrated framework for personality psychology, known as the Systems Framework for Personality Psychology.

Mayer received a Bachelor of Arts with majors in creative writing and literature and drama from the University of Michigan in 1975 and a Doctor of Philosophy in psychology from Case Western Reserve University in 1982.

He served as postdoctoral scholar in psychology at Stanford University from 1983 to 1985.