Gestalt theoretical psychotherapy is a method of psychotherapy based strictly on Gestalt psychology. It was developed by the German Gestalt psychologist and psychotherapist Hans-Jürgen P. Walter and his colleagues in Germany and Austria.
One of the most striking characteristics of Gestalt Theoretical Psychotherapy is the key role of the epistemological grounding position of Gestalt theory (critical realism) and its applicability to the fundamental, theoretical and practical problems in psychotherapy. In Gestalt Theoretical Psychotherapy this is closely bound up with the basic methodological approach (holistic, phenomenological, experimental) of Gestalt theory, its system theoretical approach, and its specific psychophysical and psychological approach.
Gestalt theoretical psychotherapy is related to but different from Fritz Perls' Gestalt therapy in its theoretical foundation.