Jupiter occupies a distinguished position across the depth-psychology corpus, functioning simultaneously as mythological inheritance, astrological archetype, and psychological principle. The major voices — Ficino as transmitted by Thomas Moore, Liz Greene, Dane Rudhyar, Howard Sasportas, Donna Cunningham, and Richard Tarnas — converge on Jupiter as an expansive, integrative principle, yet diverge meaningfully on its precise psychological register. For Moore, following Ficino, Jupiter mediates between solar spirituality and lunar embodiment, offering an ‘indirect path to spirit’ that keeps the soul tethered to cultural and social life. Greene situates Jupiter as Saturn’s mythological child and psychological opposite: where Saturn contracts and limits, Jupiter embodies creative solar energy channelled into mental aspiration and expansive awareness. Rudhyar, drawing on Jungian compensation theory, reads Jupiter as the anima/animus function and as the soul’s precipitating force into incarnate selfhood — the future pulling the present toward destiny. Sasportas maps Jovian energy through the twelve houses, documenting its expansive, occasionally inflationary effects on experience. Tarnas, operating on a transpersonal scale, tracks Jupiter-Uranus alignments as engines of revolutionary emancipation, scientific breakthrough, and cultural renaissance — while equally naming their shadow as naïve optimism, puer inflation, and Icarian excess. Across all treatments, the governing tension is between Jupiter as genuine expansive wisdom and Jupiter as untempered inflation requiring Saturnian discipline.