Giuseppe Moruzzi (July 30, 1910 – March 11, 1986) was an Italian neurophysiologist.
He was one of three scientists who connected wakefulness to a series of brain structures known as the reticular activating system, and his work reframed sleep as an active process in the brain rather than a passive one.
He received the Karl Spencer Lashley Award from the American Philosophical Society and the Feltrinelli Prize from the Accademia dei Lincei.