The term ‘Jordan’ enters the depth-psychology corpus along two distinct but occasionally convergent axes. The first is mythological and symbolic: in Jungian exegesis, the River Jordan functions as a threshold image—a site of purification, initiation, and ontological transformation. Von Franz’s commentary on the Aurora Consurgens reads Naaman’s sevenfold washing in the Jordan as an alchemical prefiguration of baptism, linking the river’s waters to the sevenfold planetary symbolism and the doctrine of the Holy Spirit’s gifts. Jung’s Aion extends this further, treating the ‘upwards-flowing Jordan’ as a Gnostic cosmogonic symbol equated with the hermaphroditic Logos, the horn of the moon, and the ascending libido that begets gods. The second axis is biographical and scientific: Pascual Jordan, the German quantum physicist, figures in Jung’s letters as an interlocutor on the border territory between modern physics and psychic phenomena. Jung corresponds with Pascual Jordan about clairvoyance, synchronicity, and the convergence of quantum theory with depth psychology—a dialogue mediated also through Pauli. In Psychological Types, a third ‘Jordan’—the British psychologist Furneaux Jordan—serves as a primary source for Jung’s typology of the introverted and extraverted characters. These three registers—mythic river, quantum physicist, and typological predecessor—give the term an unexpectedly rich and polysemous presence in the corpus.