The construct of an Interspace, synthesized from Eastern and Western philosophies, may be useful in contemplating a next step in the metatheoretical evolution of psychoanalysis. This article will describe Eastern philosophical viewpoints about the interconnectedness of consciousness, show recent developments in the relational-constructivist movement and other theories that push the one-person, two-person, and blended two-person (intersubjective) psychoanalytic envelope. The Interspace is proposed as an overarching and interpenetrating dimension within which individual and relational levels of consciousness are embedded, and in regard to which different rules of time and space may apply. Potentially sweeping implications for reconceptualizing in-session phenomena, psychoanalytic theory and treatment, emotional disorders and symptoms, as well as metaphysical phenomena in human experiences are explored in relation to considering the Interspace.