Isador Henry Coriat (December 10, 1875 – May 26, 1943) was an American psychiatrist and neurologist of Moroccan-Jewish descent.

[1] He was born in Philadelphia in 1875 as the son of Harry (Hyram) Coriat, a Sephardi Jew native of Marrakesh, who emigrated to the United States from France in 1867, and Clara née Einstein.

[3] He was one of the founders of Boston Psychoanalytic Society, the first secretary in 1914 and president in years 1930–32.

Coriat was the only Freudian analyst in Boston during the period after James Jackson Putnam's death.

Elwood Worcester, served as the medical expert for the Emmanuel Movement and co-authored Religion and Medicine; The Moral Control of Nervous Disorders.