Carl Gustav Jung (German pronunciation: [ˈkaʁl ˈɡʊstaf ˈjʊŋ]; (26 July 1875 – 6 June 1961) was a Swiss psychiatrist, an influential thinker and the founder of Analytical Psychology. Jung is often considered the first modern psychologist to state that the human psyche is "by nature religious" and to explore it in depth.

Though not the first to analyze dreams, he is one of the best known pioneers in the field of dream analysis. While he was a fully involved and practicing clinician, much of his life's work was spent exploring tangential areas, including Eastern and Western philosophy, alchemy, astrology, and sociology, as well as literature and the arts; all of which were extremely productive in regard to the symbols and processes of the human psyche, found in dreams and other entries to the unconscious.

He considered the process of individuation necessary for a person to become whole. This is a psychological process of integrating the opposites including the conscious with the unconscious while still maintaining their relative autonomy. Individuation was the central concept of analytical psychology.

Many pioneering psychological concepts were originally proposed by Jung, including the Archetype, the Collective Unconscious, theComplex, and synchronicity. A popular psychometric instrument, the Myers-Briggs Type Indicator (MBTI), has been principally developed from Jung's theories.

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