The Quatrième groupe (Fourth group) of the Organisation psychanalytique de la langue française (O. P. L. F., French-Language Psychoanalytic Group) is one of the larger psychoanalytic groups in France. It claims to follow principles and methods that have opened up a third way between Lacanism and the standards of the International Psychoanalytical Association.

The Quatrième groupe was born out of the third split in the French psychoanalytic movement, which occurred in March 1969. This was after the 1953 split, which gave rise to the Société française de psychanalyse (French Psychoanalytic Society), and the 1963 split, which divided the Société française de psychanalyse into the Association psychanalytique de France (French Psychoanalytic Association) and theÉcole Freudienne de Paris (Freudian School of Paris), created by Jacques Lacan.

The founders of the Quatrième groupe—Piera Aulagnier, François Perrier, and...