Agency occupies a contested but indispensable position across the depth-psychology corpus, bridging phenomenological philosophy, trauma theory, neuropsychology, and somatic approaches. The term carries at least three distinguishable registers. In phenomenological and embodied-cognition accounts — most systematically in Gallagher’s work — agency names the pre-reflective sense of being the willful initiator of an action, underwritten by forward motor-control comparators and distinct from, yet normally coincident with, the sense of bodily ownership. When this neurological substrate fails, as in schizophrenic delusions of control or thought insertion, agency and ownership dissociate in clinically illuminating ways. A second, psychodynamic register appears in Freud’s structural theory, where psychical agencies — ego, id, superego — distribute and contest authorship of mental acts without any single locus holding sovereign control. A third, experiential-therapeutic register dominates van der Kolk’s trauma framework: agency is the felt capacity to shape one’s circumstances, grounded in interoceptive awareness and the medial prefrontal cortex, and its loss is the defining wound of trauma. Damasio further situates agency within the biological construction of selfhood, rooting it in the organism’s spatial and temporal perspective. Across all three registers, the literature converges on a key tension: agency is simultaneously a phenomenological given of ordinary action and a fragile achievement that pathology, trauma, and structural dissociation can dissolve.