The genital zone occupies a structurally pivotal position in the depth-psychological literature, functioning simultaneously as the biological terminus of libidinal development and as the theoretical benchmark against which all prior erogenous organisation is measured. Freud’s Three Essays on the Theory of Sexuality establishes the conceptual architecture: the genital zone achieves primacy only at puberty, subordinating a diffuse plurality of pregenital component instincts—oral, anal, urethral—into a unified sexual organisation oriented toward reproduction and object-love. This primacy is, however, never unconditional. Abraham elaborates the developmental schema with clinical precision, demonstrating how fixation at or regression to pregenital stages produces characteristic neurotic outcomes; his analysis of hysteria reveals a configuration in which object-love persists with the deliberate exclusion of the genital zone, producing impotence and frigidity as symptomatic consequences of the castration complex. Klein’s object-relations perspective further complicates the picture: genital trends emerge prematurely in infancy, overlapping with and disrupting oral primacy, such that premature genitalization becomes a defence formation rather than a developmental achievement. Jung, characteristically sceptical of the reduction of sexuality to genital function, interrogates the theoretical coherence of distributing sexuality across erogenous zones while retaining the genitals as the implicit organisational norm. Across these positions, the genital zone serves less as a simple anatomical site than as the contested horizon of mature psychosexual life.