Narcosis may refer to:
In science Carbon dioxide narcosis, condition where a high level of carbon dioxide in the blood leads to a depressed level of consciousness Hydrogen narcosis, an effect of diving deep with hydrogen Nitrogen narcosis, an effect of diving deep with nitrogen Unconsciousness induced by a narcotic drug through anesthesia
In music Narcosis (band), a punk band "Narcosis", a song by Tomahawk from the album Tomahawk, 2001
See also Narcolepsy, a chronic neurological disorder Necrosis, a form of cell injury that results in the premature death of cells Sleep