Georges de Morsier (25 February 1894, Paris – 9 January 1982, Geneva) was a Swiss neurologist.
He studied natural sciences and medicine in Geneva and subsequently went to Paris as a resident to psychiatrist Gaétan de Clérambault.
From 1962 onward, he was director of the neurological polyclinic of Geneva University Hospital (HUG).
[2] Known for his research of visual hallucinations, he is credited with coining the terms "Charles Bonnet syndrome" (named after Swiss biologist Charles Bonnet) and "Zingerle syndrome" (named after Austrian neurologist Hermann Zingerle) for specific hallucinatory conditions.
He also honored his mentor, Gaétan de Clérambault, with a syndrome — it being defined as a hallucinatory state characterized by auditory and visual hallucinations associated with chronic psychosis.