The World Axis — axis mundi, cosmic pillar, world tree — occupies a pivotal position in the depth-psychology corpus as the primordial symbol of oriented cosmic space: the vertical line connecting underworld, earth-surface, and heaven that transforms undifferentiated chaos into an inhabitable, meaningful world. Eliade provides the most sustained treatment, demonstrating across shamanic, archaic, and agrarian traditions that the symbol cluster — sacred pole, world tree, stone pillar, central mountain — encodes the same structural logic: a Centre of the World through which passage between cosmic registers becomes possible. Campbell extends this reading into mythic-image analysis, showing how the Cross of Christ and the Mesopotamian axis mundi belong to a single morphological family while diverging in their temporal philosophy: cyclical versus linear time. The Rudhyar strand introduces a psycho-cosmological transposition, identifying the Earth’s polar axis as the astrological correlate of individual selfhood — the ‘I AM’ of planetary being — making the World Axis a living symbol of individuation rather than a static cosmographic given. Armstrong’s treatment of the bodhi tree and the ‘immovable spot’ represents the Buddhist inflection of the same symbolic field. Tensions arise between purely phenomenological accounts (Eliade), mythological-comparative readings (Campbell), and astrological-psychological applications (Rudhyar), but all converge on the axis as the condition of possibility for orientation, sacred space, and the communication between levels of being.