Abbé (Abbot) José Custódio de Faria, (30 May 1746 - 20 September 1819), was a colourful Goan Catholic monk who was one of the pioneers of the scientific study of hypnotism, following on from the work of Franz Anton Mesmer. Unlike Mesmer, who claimed that hypnosis was mediated by "animal magnetism", Faria understood that it worked purely by the power of suggestion.
Faria changed the terminology of mesmerism. Previously focus was on the "concentration" of the subject. In Faria's terminology the operator became "the concentrator" and somnambulism was viewed as a lucid sleep. The Indian method of hypnosis used by Faria is command, following expectancy.The theory of Abbe Faria is now known as Fariism.