Posner (; born September 12, 1936) is an American psychologist, the editor of numerous cognitive and neuroscience compilations, and an eminent researcher in the field of attention.
He is currently an emeritus professor of psychology at the University of Oregon (Department of Psychology, Institute of Cognitive and Decision Sciences), and an adjunct professor at the Weill Medical College in New York (Sackler Institute).
A Review of General Psychology survey, published in 2002, ranked Posner as the 56th most cited psychologist of the 20th century.