Abstract: Various embodiments of the present invention are directed to a tongue retractor and fluid/particle barrier for use in medical procedures performed in and around a patient's mouth. In one embodiment of the present invention, a kidney-shaped tongue retractor and fluid/particle barrier, with an insertion end and a handling end, is inserted into the mouth of a patient. The insertion end of the tongue retractor and fluid/particle barrier is specifically positioned to isolate and protect the patient's tongue from the medical procedure and to protect the patient from inhaling or swallowing fluids and scattered debris.