Wilhelm Robert Fliess (29 December 1895 – 9 May 1970) was a German-American physician and psychoanalyst.
He was the son of Wilhelm Fliess, a controversial otolaryngologist whose pseudoscientific theories influenced Sigmund Freud.
He coined the term ambulatory psychosis.
[4] He immigrated to the United States in 1933 and worked as a physician.
[1] His cousin Beate Hermelin was a German-born experimental psychologist, who worked in the UK.