John Robert Putnam French Jr. (August 7, 1913 – October 14, 1995) was an American psychologist who served as professor emeritus at the University of Michigan.
In 1940 French received his doctorate from Harvard University, completing a dissertation on the cohesion of groups under distress.
He became noted as an expert in social psychology and experimental research, especially in the application of Kurt Lewin's field theory to organizational and industrial settings.
He served as a program director at the Research Center for Group Dynamics in 1947, and as president of the Society of Psychological Study of Social Issues.
He received the National Institute for Mental Health's Research Career Award and was the recipient of a Fulbright Fellowship.