Gerhard Adler (14 April 1904 – 23 December 1988) was a major figure in the world of analytical psychology, known for his translation into English from the original German and editorial work on the Collected Works of Carl Gustav Jung. He also edited C.G. Jung Letters, with Aniela Jaffe. With his wife Hella, he was a founding member of the Society of Analytical Psychology in London, of which C.G. Jung was first President. Despite their years-long collaboration on translating and editing, Adler's allegiance to Jung and the "Zurich school" caused irreconcilable differences with Michael Fordham, and led to his leaving the Society of Analytical Psychology and founding the Association of Jungian Analysts.