Quietism is the name given to a set of contemplative practices that rose in popularity in France, Italy, and Spain during the late 1670s and 1680s, particularly associated with the writings of the Spanish mystic Miguel de Molinos, and which were condemned as heresy by Pope Innocent XI in the papal bull Coelestis Pastor of 1687. "Quietism" was seen by critics as holding that man's highest perfection consists in a sort of psychical self-annihilation and a consequent absorption of the soul into the Divine Essence even during the present life.

Miguel de Molinos was a Spanish mystic, the chief representative of the religious revival known as Quietism.