Transcendent experience occupies a contested but generative position within the depth-psychological corpus, spanning clinical observation, phenomenological taxonomy, transpersonal theory, and neurobiological speculation. At one pole, Stanislav Grof’s systematic LSD research maps transcendent states — cosmic unity, oceanic ecstasy, encounter with Universal Mind — onto a cartography of the unconscious rooted in perinatal matrices and transpersonal domains, insisting these states constitute genuine ontological encounters rather than mere psychic projections. At another pole, Yaden and colleagues propose a rigorously empirical taxonomy of ‘self-transcendent experiences’ (STEs), characterized by decreased self-salience and heightened connectedness, deliberately bracketing metaphysical claims in favor of measurable psychological constructs. Jung occupies a mediating position: his transcendent function names a psychic process — arising from the conflict of opposites — that produces transformative symbols, not a direct encounter with cosmic reality, yet he consistently resists reducing such experiences to pathology or wish-fulfillment. Aurobindo, by contrast, situates transcendent experience within an evolutionary cosmology in which supramental consciousness awaits emergence beyond mind. The field’s central tension — whether transcendent experience discloses objective metaphysical reality, represents an extreme of normal psychological functioning, or enacts the psyche’s own structural capacity for self-surpassing — remains unresolved and productive.