THE QUESTION OF A THIRD TOPOGRAPHICAL THEORY AND THE POSITION OF THE SUBJECT IN PSYCHOANALYSIS. This paper outlines a reconstruction of Freudian thinking, from the work on aphasias to the two analytic topographical theories, in terms of a functional conception of psychism, centered around the idea of association/associativity. On this basis, there is an attempt to demonstrate how the question of a so-called "third topographical theory" depends on a need not only to extend metapsychology, but also in particular to give a place to the notion of the "subject" and to its correlates, "subjectivity", "subjectivization" and others. A functional and associative conception of these notions is presented, based on the concept of function-subject, which could constitute the first draft of a third topographical theory, that of the subject and of subjectivity in general.