Jean Klein (January 2, 1916 — February 22, 1998) was a French author, spiritual teacher and philosopher of Advaita (Nondualism). Several of his disciples went on to become spiritual teachers themselves, including Eric Baret, Francis Lucille, Jean-Marc Mantel, Joan Ruvinsky, Richard Miller and David Ciussi. According to Jean Klein, it is only in a "spontaneous state of interior silence that we can open ourselves to our true nature: the 'I Am' of pure consciousness."
Klein was born in Brno. He studied musicology and medicine in Vienna and Berlin. He arrived in France in 1933, working for the French Resistance. He left for India around 1950 to study yoga for three years. During those three years he met a spiritual teacher of Advaita and returned to the West to become a spiritual teacher himself. He died in Santa Barbara, California.