Abstract: A device which is designed to simultaneously store and sterilize the head of a stethoscope within the pocket of a user during periods of non-usage. The small sterilizer is a box-shaped unit constructed of glass and plastic which fits into a shirt or jacket pocket, and which has a U-shaped lip which leads into an opening for receiving the head of the stethoscope. Beneath the lip is a switch that operates on contact with the stethoscope head to activate the unit, and the unit is powered by a small pen light batteries. An ultraviolet light is located proximate the U-shaped lip and delivers ultraviolet light rays through a circular transparent window aligned with the stethoscope head, and a clip on the back of the unit enables it to be easily attached to a user's pocket.