Abstract: An apparatus for warming medical instruments, such as a stethoscope, includes a wall mountable, multi-walled, vented housing having a front access opening closed by a hinged translucent panel and an open bottom. A reflective, flexible metal liner having a lower portion overlying the open housing bottom reflects radiant heat from an electric lamp heat source in the housing toward an instrument to be heated vertically positioned in a support formed in the lower portion of the liner and aligned with a slot in the lower portion leading to the access opening. The heat source is thermostatically controlled.