Stim may refer to:
STIM (Svenska Tonsättares Internationella Musikbyrå), Swedish Performing Rights Society Stimming, repetitive self-stimulating behavior, often observed in autistic people
See also Stimulus (physiology), a detectable change in the internal or external environment Stimulation, the action of various agents (stimuli) on muscles, nerves, or a sensory end organ Stimulant, a drug or other substance that temporarily increases alertness and wakefulness