Abstract: A pacifier thermometer (1) having a lip-shield (1'), a rubber nipple (2) projecting therefrom, a temperature sensor (6) and electronic measuring circuitry. The temperature sensor (6) is arranged on a metallic anchoring element (8) on the inner side of said nipple (2), the anchoring element (8) being connected through the nipple wall to a flat metalic counterelement (9) and thus fixedly held in the nipple wall (4') at a desired location. This construction warrants an optimized heat transfer from the tongue of a patient to the temperature sensor (6), so that the temperature can be quickly measured displayed and read.