Otto Kaiser (30 November 1924 – 14 December 2017)[1] was a German Old Testament scholar.
Kaiser was born in Prenzlau, Germany, where he attended the Gymnasium in Eberswalde and went to the University of Berlin to study medicine, as well as philosophy with Nicolai Hartmann.
Kaiser's work stands in the tradition of Rudolf Bultmann; he sees theology as "the study of the human reflection of the experience of the Divine in time and space."
He has written a complete, three-volume theology of the Old Testament, as well as the leading one- and three-volume introductions into Old Testament Studies in German; among his many special areas are the Book of Job, Ecclesiastes, the Apocrypha, and Sirach.
Kaiser is also a leading scholar on ancient and modern philosophy, particularly on Kant, Hegel, and toward the end of his career, Nietzsche, Plato, and Aristotle.