Edgar Bérillon (23 May 1859, Saint-Fargeau – 6 March 1948) was a French psychiatrist known for his research of hypnosis.
He studied medicine in Paris, and from 1882 worked as a préparateur of comparative pathology courses at the Muséum d'histoire naturelle.
In 1884 he received his medical doctorate with the dissertation-thesis "De l'indépendance fonctionnelle des deux hémisphères cérébraux".
In 1900 he became a professor at the École de Psychologie in Paris.
[2] In 1889 he was named general secretary of the Société d'hypnologie et de psychologie, and in 1905 was appointed president of the Société de pathologie comparé.