Karl Daub (March 20, 1765 – November 22, 1836) was a German Protestant theologian.He was born at Kassel. He studied philosophy, philology and theology at Marburg in 1786, and eventually (1795) became professor ordinarius of theology at the University of Heidelberg, where he remained until his death.Daub was one of the leaders of a school which sought to reconcile theology and philosophy, and to bring about a speculative reconstruction of orthodox dogma.