Abstract: A tongue positioning device is disclosed for positioning the tongue within a user's mouth. The device includes a tongue positioning mouthpiece that includes a mouthpiece body with a center hole therein. A flange portion extends around the periphery of the mouthpiece body that forms an acoustic seal with the teeth and lips of a patient during use. A pair of bite blocks protrude from the mouthpiece body on opposing lateral sides of the center hole. A tongue bridge is fixedly secured to the bite blocks via a pair of downwardly extending arms. The tongue bridge includes a platform area where a patient's tongue is placed under when the mouthpiece is used. A cylindrical portion extends from the mouthpiece body in a direction away from the flange. An optional filter is removable from the cylindrical portion and acts as a protective barrier for viruses, bacteria, microbes, and other pathogens. The filter includes a removable filter body containing a filter media.